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Typically, organism-based biogeographic studies consider distribution and abundance over time on various scales. However, to be comprehensive, factors of environment and habitat, energetics, morphology, and population dynamics should also be included. In addition, these studies should consider not only the spatial extent that an individual or species occupies or can roam within, but also the space over which an animal can extract and interpret information, a less well-defined element of niche space which largely shapes its movements or distribution. Understanding the processes that inform patterns of species distribution, both intrinsic and external to the animal, is key to understanding a species’ ecology. Here, we consider the biogeography of whales, given these ideas, with a particular focus on the acoustical components of their biology and landscape. Cetaceans use of sound to communicate, navigate and forage, and so interpret the soundscape, is a central consideration. It has important implications in a changing ambient environment and will increasingly influence species’ survival.

Less Erroneous Pictures. Whalers’ Knowledge in Nineteenth-Century Natural History, Oceanography, and Literature. This paper uses the iconoclasm of Herman Melville's Moby-Dick as a point of departure to examine the problem of representing whales pictorially. Focussing on the use of images in cetological works and whaling logbooks, the paper investigates how the whalers’ knowledge, which served the hunting, killing, and economic exploitation of whales, came to be inscribed in the antithetical work of natural historians who were increasingly interested in living organisms. This paper argues that Melville's juxtaposition of whalers’ and naturalists’ knowledge runs parallel with a dichotomy, along which natural histories, travelogues, and thematic maps of oceanography constitute the whale as an object of knowledge. It concludes by suggesting that, at the same time, this dichotomy is repeatedly undermined for the sake of the whale's representation.

The use of lethal research methods on cetaceans has a long and complicated history in cetology (the scientific study of whales, dolphins and porpoises). In the current era, collecting data through the hunting of whales (sometimes referred to as scientific whaling) remains a source of considerable conflict in various fora, including scientific ones. Based on interviews and documents, this article explores how marine mammal scientists articulate the validity of particular practices and research at both the International Whaling Commission and in professional scientific societies. Drawing on cultural theory, the article explores scientists’ boundary work, describing the purity and pollution of particular whaling practices in different institutional contexts. Respondents on either side of the debate argued for the pure or polluted nature of various positions, often utilising particular idealised values of science: objectivity, honesty and openness regarding how conclusions were drawn. The nature of boundary work performed is then related to the institutional context within which it takes place. This article thus highlights how science’s role in environmental conflicts can be assessed through boundary work that denotes who can legitimately speak for science, on what topics and how science is stage-managed.

Certain populations of killer whales Orcinus orca feed primarily or exclusively on marine mammals. However, whether or not baleen whales represent an important prey source for killer whales is debatable. A hypothesis by Springer et al. (2003) suggested that overexploitation of large whales by industrial whaling forced killer whales to prey-switch from baleen whales to pin- nipeds and sea otters, resulting in population declines for these smaller marine mammals in the North Pacific and southern Bering Sea. This prey-switching hypothesis is in part contingent upon the idea that killer whales commonly attack mysticetes while they are in these high-latitude areas. In this study, we used photographic and sighting data from long-term studies of baleen whales in 24 regions worldwide to determine the proportion of whales that bear scars (rake marks) from killer whale attacks, and to examine the timing of scar acquisition. The results of this study show that there is con- siderable geographic variation in the proportion of whales with rake marks, ranging from 0% to >40% in different regions. In every region, the great majority of the scars seen were present on the whales' bodies when the animals were first sighted. Less than 7% (9 of 132) of scarred humpback whales with multi-year sighting histories acquired new scars after the first sighting. This suggests that most killer whale attacks on baleen whales target young animals, probably calves on their first migration from low-latitude breeding and calving areas to high-latitude feeding grounds. Overall, our results imply that adult baleen whales are not an important prey source for killer whales in high latitudes, and therefore that one of the primary assumptions underlying the Springer et al. (2003) prey-switching hypothesis (and its purported link to industrial whaling) is invalid.

Acoustic recordings of baleen whale calls were analysed for the calendar year 1997 from a pair of fixed hydrophones located 5 km east of Great Barrier Island, New Zealand. The primary goal of the study was to examine blue whale seasonally and song type as part of a larger worldwide study. Calls were recorded from blue whales of two song types, fin whales, humpback whales, Bryde's whales, and of two unknown call types, each probably produced by Bryde's whales. The peak of calling density was May through September for the blue, fin, and humpback whales. The known Bryde's whale calls occurred year‐round and the probable Bryde's whale calls occurred from May through December. Blue whale songs of a type so far known only from New Zealand waters were detected within 2 km of shore and occurred four times from June to December, whereas the Southern Ocean blue whale songs were detected only further offshore in mid‐winter. Bryde's whale calls were the most abundant type and often occurred near the hydropho...

Most species of baleen whales were subject to intensive overexploitation by commercial whaling in this and previous centuries, and many populations were reduced to small fractions of their original sizes. Here, we review the status of baleen whale stocks, with an emphasis on those that are known or thought to be critically endangered. Current data suggest that, of the various threats potentially affecting baleen whales, only entanglement in fishing gear and ship strikes may be significant at the population level, and then only in those populations which are already at critically low abundance. The impact of some problems (vessel harassment, and commercial or aboriginal whaling) is at present probably minor. For others (contaminants, habitat degradation, disease), existing data either indicate no immediate cause for concern, or are insufficient to permit an assessment. While the prospect for many baleen whales appears good, there are notable exceptions; populations that are of greatest concern are those suffering from low abundance and associated problems, including (in some cases) anthropogenic mortality. These include: all Northern Right Whales Eubalaena glacialis, Bowhead Whales Balaena mysticetus of the Okhotsk Sea and various eastern Arctic populations, western Gray Whales Eschrichtius robustus, and probably many Blue Whale Balaenoptera musculus populations. We review the status of these populations and, where known, the issues potentially affecting their recovery. Although Humpback Whales Megaptera novaeangliae and Southern Right Whales Eubalaena australis were also heavily exploited by whaling, existing data indicate strong recovery in most studied populations of these species.

Foreword. Acknowledgements. Contributors. 1. Why Whales, Why Now? Philippa Brakes Part 1: Whales in Human Cultures. 2. Impressions: Whales and Human Relationships in Myth, Tradition, and Law. Stuart Harrop 3. Whales of the Pacific Viliamu Iese and Cara Miller 4. The Journey Towards Whale Conservation in Latin America. Miguel Iniguez 5. Whales and the USA. Naomi A. Rose, Patricia A. Forkan, Kitty Block, Bernard Unti and E.C.M. Parsons 6. Whales in the Balance: To Touch or To Kill? A View of Caribbean Attitudes towards Whales. Nathalie Ward 7. The British and the Whales. Mark Peter Simmonds 8. Whales in Norway. Siri Martinsen 9. Of Whales, Whaling and Whale Watching in Japan: a Conversation. Jun Morikawa and Erich Hoyt 10. A Contemporary View of the International Whaling Commission. Richard Cowan Part 2: The Nature of Whales and Dolphins. 11. The Nature of Whales and Dolphins. Liz Slooten 12. Brain Structure and Intelligence in Cetaceans. Lori Marino 13. Communication. Paul Spong 14. Lessons from Dolphins. Toni Frohoff 15. Highly Interactive Behaviour of Inquisitive Dwarf Minke Whales. Alastair Birtles and Arnold Mangott 16. The Cultures of Whales and Dolphins. Hal Whitehead Part 3: New Insights New Challenges. 17. Whales and Dolphins on a Rapidly Changing Planet. Mark Peter Simmonds and Philippa Brakes 18. From Conservation to Protection: Charting a New Conservation Ethic for Cetaceans. Philippa Brakes and Claire Bass 19. What is it Like to be a Dolphin? Thomas I. White 20. Thinking Whales and Dolphins. Philippa Brakes and Mark Peter Simmonds Index.

The western South Atlantic (WSA) humpback whale population inhabits the coast of Brazil during the breeding and calving season in winter and spring. This population was depleted to near extinction by whaling in the mid-twentieth century. Despite recent signs of recovery, increasing coastal and offshore development pose potential threats to these animals. Therefore, continuous monitoring is needed to assess population status and support conservation strategies. The aim of this work was to present ship-based line-transect estimates of abundance for humpback whales in their WSA breeding ground and to investigate potential changes in population size. Two cruises surveyed the coast of Brazil during August-September in 2008 and 2012. The area surveyed in 2008 corresponded to the currently recognized population breeding area; effort in 2012 was limited due to unfavorable weather conditions. WSA humpback whale population size in 2008 was estimated at 16,410 (CV = 0.228, 95% CI = 10,563–25,495) animals. In order to compare abundance between 2008 and 2012, estimates for the area between Salvador and Cabo Frio, which were consistently covered in the two years, were computed at 15,332 (CV = 0.243, 95% CI = 9,595–24,500) and 19,429 (CV = 0.101, 95% CI = 15,958–23,654) whales, respectively. The difference in the two estimates represents an increase of 26.7% in whale numbers in a 4-year period. The estimated abundance for 2008 is considered the most robust for the WSA humpback whale population because the ship survey conducted in that year minimized bias from various sources. Results presented here indicate that in 2008, the WSA humpback whale population was at least around 60% of its estimated pre-modern whaling abundance and that it may recover to its pre-exploitation size sooner than previously estimated. Publisher PDF

American whalemen sailed out of ports on the east coast of the United States and in California from the 18(th) to early 20(th) centuries, searching for whales throughout the world's oceans. From an initial focus on sperm whales (Physeter macrocephalus) and right whales (Eubalaena spp.), the array of targeted whales expanded to include bowhead whales (Balaena mysticetus), humpback whales (Megaptera novaeangliae), and gray whales (Eschrichtius robustus). Extensive records of American whaling in the form of daily entries in whaling voyage logbooks contain a great deal of information about where and when the whalemen found whales. We plotted daily locations where the several species of whales were observed, both those caught and those sighted but not caught, on world maps to illustrate the spatial and temporal distribution of both American whaling activity and the whales. The patterns shown on the maps provide the basis for various inferences concerning the historical distribution of the target whales prior to and during this episode of global whaling.

The sperm and beaked whales are some of the largest toothed whales, but their offshore lifestyle and long dive times have made their study relatively difficult. Many beaked whale species appear externally similar and several species have only recently been identified. These whales are the basal odontocetes and diverged from the ancestral lineage c . 15–25 Ma. Beaked whales are characterized by the presence of a beak, while sperm whales were named for their spermaceti organ, a fatty structure containing oil thought to resemble semen, used in sound production. Sperm whales and some beaked whales were taken in large numbers during whaling operations in the last centuries. Much of what we know about them stems from the study of dead animals, but today live animals are also being studied at sea. Sperm and beaked whales are found in deep water in all oceans. These are some of the deepest mammalian divers, often feeding a kilometer underwater for their squid prey. However, difficulties studying such relatively shy animals mean that, except for the sperm whale, little is known of the social dynamics of most other species. Their most significant threats today are from fisheries, shipping, contaminants, and particularly increasing levels of underwater noise, especially military sonars.

This chapter looks to the earliest accounts of whale use in Western Europe, from Anglo-Saxon whalers to the natural history of Albertus Magnus. Whales could evoke fear and fascination and had done so from antiquity. Understandings of relations between humans, wolves and wilderness in the Middle Ages are based on intense negativity, fear and insecurity driven and encouraged by Christianity. Ancient Greek and Roman authors produced the earliest references to human encounters with whales. The spectacular breaching of Sperm whales, which are known to jump almost entirely out of the water, seems to fit Nearchus? description of the water displacement created by the whales. From the Old Testament to Albert the Great, traditions surrounding human perceptions of whales reveal continuity and a measure of creativity. North Atlantic communities have relied on whales to acquire tons of whale resources in one of the most inhospitable maritime realms, the furious North Atlantic.Keywords: Albertus Magnus; Christianity; classical antiquity; Europe; Greek; Middle Ages; Nearchus?; North Atlantic; Roman; whales

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Long-lived, slow to reproduce, and often hidden beneath the water's surface, whales and dolphins (cetaceans) have remained elusive subjects for scientific study even though they have fascinated humans for centuries. Until recently, much of what we knew about cetaceans came from commercial sources such as whalers and trainers for dolphin acts. Innovative research methods and persistent efforts, however, have begun to penetrate the depths to reveal tantalizing glimpses of the lives of these mammals in their natural habitats. This book presents a comprehensive synthesis and review of these studies. Groups of chapters focus on the history of cetacean behavioural research and methodology; state-of-the-art reviews of information on four of the most-studied species: bottlenose dolphins, killer whales, sperm whales and humpback whales; and summaries of major topics, including group living, male and female reproductive strategies, communication, and conservation drawn from comparative research on a wide range of species. Written by cetacean scientists, this volume should be of benefit to students of cetology and researchers in other areas of behavioral and conservation ecology, as well as anyone with a serious interest in the world of whales and dolphins.

Recognition of a new species of living cetacean is a rare event. But following the DNA analysis of specimens held in museum collections,Mesoplodon perrini, a type of beaked whale, has made its debut.

Most information on the distribution, movements and ecology of cetaceans in the N.E. Atlantic have come from whale catches mainly in the early part of this century, and from strandings records collected by the British Museum (Nat. Hist.). With the formation of the Cetacean Group in 1973, a scheme for recording live cetaceans at sea was started. This paper summarizes the results of about two thousand sightings involving nearly 25,000 individual animals between the years 1958– 1978 (but mainly from the last 10 years), and relates them to existing information collected from other sources. Difficulties of identification and potential sources of bias are discussed. Most large cetaceans are present in British waters as part of a latitudinal feeding migration whereas smaller species may be present in the N.E. Atlantic throughout the year with movements being mainly of an offshore-inshore nature. Some species are clearly very rare probably as a result of over-exploitation in the last century and early part of this century. These include the Right whale, Blue whale and probably Humpback whale. Other species are rarely recorded because their usual range is some distance from British waters. These include narwhal and White whale (from Arctic waters), Pygmy sperm whale, smaller beaked whales and Euphrosyne dolphin (from warm temperate to tropical waters). The Harbour porpoise is by far the most common and widespread species in British waters, occurring mainly in inshore waters, although it has apparently declined in certain regions (e.g. Southern North Sea, English Channel, Irish Sea) in recent years probably as a result of pollution, disturbance and/or over-exploitation of food resources. Bottle-nosed and Risso's dolphins are also widely distributed close to the coast, although the latter is restricted to the west and south coasts and the former is associated particularly with some large estuaries. Common dolphins are relatively abundant and widespread, and are more pelagic than the previous three species. White-sided dolphins have a mainly pelagic distribution centred on the Northern North Sea whilst the White-sided dolphin has a wider distribution which includes all the western seaboard. Of larger cetaceans, the Killer whale is relatively common particularly on the west coasts and the Pilot whale is locally and seasonally abundant at the north and south ends of Britain and Ireland where they probably represent distinct populations. The Bottlenose whale, Minke, Fin and Sei whales are confined to the west and north coasts, all but the Minke whale having a primarily pelagic distribution. Sperm whales although increasingly commonly stranded on British coasts, are rarely sighted in inshore waters. The west coast of Britain and Ireland are the most important regions for cetaceans whereas the Southern North Sea has the smallest number although in previous decades numbers were probably higher. Most cetacean species occur mainly in the summer months, particularly August and September, although some species, e.g. White-sided Dolphin, Pilot whale and Minke whale show peaks later in the year. A number of species show secondary spring peaks, e.g. Bottle-nosed and Common dolphins, Risso's dolphins, and Pilot whales. Present evidence suggests that only the large whales exhibit definite latitudinal migrations, all other species being resident at high latitudes although they may show offshore-inshore or possibly small latitudinal movements. Many of the movements indicated from the present analysis can be linked to the seasonal changes in food availability and to the timing and geographical location of breeding, and these are described in detail. Many concentrations of a particular cetacean species occur regularly in the same area year after year and these may often be related to spawning concentrations of a particular fish species. Variations in herd size are noted between species and within species at different times of the year. These are related to aggregations associated with feeding, breeding, and long-distance movements winch will vary according to the biology and ecology of different cetacean species.

Whaling companies have for some years successfully conducted a whale fishery off the shores of the South Shetlands, Graham Land, South Orkneys, and South Georgia, where the waters of the Antarctic mingle with the South Atlantic Ocean.

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