Category: Transparent or Jelly-Like
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Siphonophores |
These are colonial animals, mostly transparent, with many specialized parts; relatives of jellyfish. A pneumatophore is a gas-filled float positioned at the top of the colony in some siphonophores. |
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Jellyfish |
Often transparent, bell-shaped marine animals with hanging tentacles; body more than 95% water; size varies. |
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Pelagic Tunicates |
Nearly transparent marine animals, body mostly water. Four pelagic groups: salps, doliolids, appendicularians, and pyrosomes; each is covered by a thin or thick tunic. |
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Ctenophores |
Transparent marine animals with eight rows of cilia. Body is ~97% water, size from a few mm to several cm. |
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Cladocerans |
Commonly called "water fleas." Bear a large, anterior compound eye, and carapace covering most of the body. |