GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Sea squirts. These are Rhopalaea crassa (blue, left), Polycarpa aurata (purple/orange, centre) and Lissoclinum sp. (pink, right). Sea squirts are sessile barrel-shaped animals that filter water through their body cavity, feeding on the plankton left behind. Photographed off Indonesian Borneo.
Model release not required. Property release not required.