Because most jellyfishes are venomous, they are also called sea wasps or
marine stingers. Each tentacle contains more than 100,000 cnidocytes
with nematocysts, small needles that inject venom into the victim. The
most dangerous species are found in the tropical Indo-Pacific but the
Caribbean species can also cause serious injuries. This picture was
taken in Guadeloupe (French West Indies) by Dominique Marion, a senior
scientist from the Institut de Biologie Structurale in Grenoble, France.
Visit his galleries at http://diffraction-marine.net for more underwater pictures.
