I do not pretend to have been to the bottom of the sea.Robert Boyle, 1670MATTER OUT OF PLACEConsider the following object as shown in an early eighteenth-century engraving (Figure 1) . It is a piece of wood - not a highly worked thing, not ingeniously wrought, though it is an artefact of human labour rather than a natural body. Or is it? In the engraving, the piece of wood disappears: it is visible towards the bottom of the image, a sober pointed stump, but it is quickly subsumed by a second, enveloping entity that swirls about it in an embroidering corkscrew. What elements are here intertwining? The legend beneath the engraving identifies the artefact thus: "Navis, prope Hispaniolam ann Dom 1659. Naufragium passae, asser, a davo ferreo transfixus, corallio aspero candicante I. B. Obsitus, & a fundo maris anno 1687 expiscatusV It describes a stake or spar from a ship wrecked off Hispaniola in 1659, which is transfixed by both an iron bolt and rough whitish coral, fished out of the depths in 1687. This collector's item is neither the cliche of exemplarily beautiful coral nor straightforwardly a historical relic, but an intertwining of the two: the "transfixing" of a remnant of maritime technology by an aquatic agent. It exhibits the very process of encrustation. The spar is juxtaposed with the image of a jellyfish, and more proximately, engravings of Spanish silver coins, also encrusted with coral: "Nummus argenteus Hispanicus . . . incrustatus", one of the labels reads.1 Still another illustration, in a separate engraving, bears the legend "Frustum Ugni e mari atlantico erutum cui adhaerescunt conchae anatiferae margine muricata" - a piece of "drift wood beset with bernecle [sic] shells". It poses a similar puzzle. What appears of interest to the curious is neither the barnacle nor the wood as autonomous specimens but their physical relationship - the fact that they are stuck together.2The engravings in question were commissioned by Hans Sloane for his two- volume Natural history of Jamaica (1707-25). Sloane had visited England's rising sugar colony during 1687-89 as physician to its then governor, Christopher Monck, second Duke of Albemarle, during a period of intense capital investment underwritten by the acceleration of English involvement in the African slave trade, in whose profits Sloane became a direct beneficiary. Although Sloane's voyage to Jamaica is noted for the hundreds of plant specimens he brought back to London, the origins of his Atlantic passage in fact lie under water, in that the original motivation for Monck's acceptance of the governorship was to make a fortune through salvage projects on sunken treasure ships in the Caribbean Sea. Among Sloane's haul of specimens were numerous curiosities, including aquatic objects, such as his coral-encrusted spar and coins. Several of these curiosities were later placed on public view in the British Museum, which opened in 1759 to house the collections Sloane had amassed. To Sloane's rival John Woodward, shipping the physical context of specimens was at best a matter of necessity. "For those pieces which are found lodged in marble or stone", he advised collectors in 1696, "and are not easily got out single, send pieces of the said marble and stone, of all sorts, with the shells so lodged in them". Sloane's engraving of the encrusted spar was neither accident nor instrumentality, however, but a display of learned attention to the processes of mutual transformation between natural and artificial forces, divine creativity and human ingenuity.3Fusions of natural and artificial entities also suggest the relation between worlds of specimen gathering and treasure-hunting in which collectors like Sloane trafficked. This essay pursues early modern curiosity culture's fascination with things encrusted and transfixed into an intensely fetishised zone of collection and signification: the submarine. It aims to open up the history of the underwater realm in early modernity by examining what the anthropologist Michael Taussig suggestively describes as "the art of matter out of place". …