David Shale / Siphonophore (Nanomia sp) close up of nectophores, and palpons. Gulf of Maine, Atlanic Ocean. Epipelagic species found up to 300m depth.

Michael Pitts,Michael Pitts / Portuquese man o' war (Physalia physalis) colonial siphophore, Tobago, Caribbean.

Doug Perrine / Flower Hat Jelly / Jellyfish (Olindias formosa), a rare hydromedusa with fluorescent tentacle tips. Endemic to Brazil, Argentina, and southern Japan.

Wild Wonders of Europe / Lundgren / Skeleton shrimp (Caprellidea sp) on a hydroid, Saltstraumen, Bod, Norway, October 2008

Wild Wonders of Europe / Lundgren / Portuguese man-of-war (Physalia physalis) on the water surface, Pico, Azores, Portugal, June 2009

Wild Wonders of Europe / Lundgren / Portuguese man of war (Physalia physalis) Pico, Azores, Portugal, June 2009

David Shale / Medusa caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean

Wild Wonders of Europe / Lundgren / Great spider crab (Hyas araneus) decorated with hydroids, Moere coastline, Norway, February 2009

Michael Pitts / Hydroids growing on hull of tugboat ''Blue Plunder'' wreck, Nassau, Bahamas. July 2008.

Luis Quinta / Portuguese man-o-war {Physalia physalis} on sea surface, Azores, Atlantic ocean

Solvin Zankl / Deepsea Siphonphore {Nectalia sp}, Atlantic ocean

Juergen Freund / Portugese man-of-war / Blue Bottle {Physalia physalis} split level showing float and tentacles, Indo-pacific