Polistes paper wasps use a transient floating vegetation mat in the Banhine wetlands outflow, Mozambique.

The wasps' nest was only about 15 cm from the water surface, but the growing vegetation structures in the floating mat may have prevented it from sinking further towards the water. GLO:7ZA/01dec20:aje12772-fig-0001.jpg PHOTO (COLOR): 1 Nest of Polistes paper wasps attached to remains of an herbaceous plant protruding from a transient floating vegetation mat in the Aluize, Mozambique (November 2017). [Extracted from the article]