Word: physalia
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Many other jellyfish have stings, but those of the Physalia group secrete a nerve poison almost as virulent as the king cobra's venom. The abundant Caribbean form, physalia, is rarely more than eight inches across its mauve, iridescent, jellylike body, but it has scores of tentacles up to 50 ft. or even 100 ft. long. These tentacles are like strings of microscopic beads, containing tiny poison cells consisting of a hollow, coiled thread with a barb...
...Physalia Studied by Parker
...Parker '87, Professor of Zoology and Director of the Zoological Laboratory, to assist his research study in the nerve transmission of Physalia...