Sea life in all it's myriad forms.
Octopus & Squid
Seahorses & Seadragons
Sponges & Squirts
Sponge (Haliclona permollis), Chek Jawa, Singapore - showing multiple chimneys of a single individual sponge. Seawater is pumped continuously through a sponge by the beating activity of flagella that line the internal cavities. Water is drawn into the sponge through many small intake openings located on the outside surface and is released from exhalent openings on chimneys and vented away.
Harp Sponge (Chondrocladia lyra) The newly described invertebrate isn't so benign. Rather than filtering the water for bacteria and other single-celled organisms like most sponges do, the harp sponge employs Velcro-like barbs on its vertical branches to snag tiny crustaceans called copepods as they swim past. Then, cells specialized for digesting prey surround the captured swimmer and slowly start to digest it.
Siphonophore - related to the jellyfish and corals, it is a continuous chain of specialized polyps, individual animals that grow from one another in an organized colony. Some in the colony are devoted to feeding, armed with stinging cells to snag fish or invertebrates. Others are devoted to locomotion, propelling the whole group with a continuous pumping motion while some exist only to reproduce.