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a sunken propeller becomes overtaken by a reef with two scuba diver in the background
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SS Quartette

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This Caribbean sea anemone brightens a variety of Caribbean reef habitats.
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Sea Anemone

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This bubblegum coral has a fanlike shape. It is growing 1,310 m (4,298 ft) deep on the Davidson Seamount.
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Bubblegum Coral

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Rockfish, anemones and other invertebrates inhabit this deep-sea coral reef in Cordell Bank National Marine Sanctuary.
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Deep-Sea Coral Habitat

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Nuclear bomb in Bikini Atoll
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Naturally Resilient

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A sea lion in the Sea of Cortez observes Auster as he observes reef fishes.
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Auster Diving with Sea Lion

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A diver swims among a school of fish at Bikini Atoll, a reef which has shown resilience and recovered from nuclear testing in the 1940s and 1950s.
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Diver Swims with Fish at Bikini Atoll

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Two nurse sharks hover over a baited cage
Lesson Plan

Food Chain Hide and Seek

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Syllid fireworms can be found mainly on the seafloor, but they switch to a planktonic form to reproduce, where the females use bioluminescent signals.
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Syllid Fireworms

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The branches of a primnoid coral in the genus Calyptrophora provide a habitat for galathaoid crabs.
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Primnoid Coral

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Tree corals like this Calyptrophora bayer can grow several meters high and resemble brightly colored trees.
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Red Tree Coral

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The pink strands of this coral harbor a variety of organisms. Sea whips are gorgonian corals, with flexible skeletons.
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Sea Whip Coral

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