A three-week voyage of discovery in the Atlantic has returned with tiny animals which appear new to science. They include waif-like plankton with delicate translucent bodies related to jellyfish, hundreds of microscopic shrimps, and several kinds of fish. The voyage is part of the ongoing Census of Marine Life (CoML) which aims to map ocean life throughout the world. Plankton form the base of many marine food chains, and some populations are being disrupted by climatic change. Zooplankton are tiny marine animals. Many live on floating plants (phytoplankton), and many are in turn eaten by fish, mammals and crustaceans.