Invertebrates

Invertebrate Features

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  Red Devils

  Six feet long and always hungry, the Humboldt squid, aka the "red devil," is one of the most dangerous yet intelligent predators of the deep.

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  Discoveries in the Dark

  Eyeless spiders, translucent millipedes, 175-year-old crayfish, and other odd cave-dwellers face an uncertain future.

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  Photo Gallery: Coral Reefs

  About 80 percent of all life on Earth is found in the oceans, which cover 71 percent of the planet's surface. Take a look at how colorful life under the sea can be.

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  Caribbean Cleaners

  For some, a hungry clean-up crew is the best partner a fish can have.

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  Oyster

  Learn why these slimy-but-tasty invertebrates produce pearls. See how oysters can help humans monitor water quality by serving as “canaries in the coal mine."