| 21. | In 1874, an enterprising Irish American sea captain named sea cucumbers and copra.
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| 22. | Overfishing of sea cucumbers in the Great Barrier Reef is threatening their population.
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| 23. | Australian flatback : Australian flatbacks eat sea cucumbers, jellyfish, mollusks, prawns and seaweed.
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| 24. | These sea cucumbers have separate sexes, and eggs are fertilized externally.
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| 25. | The Asian market for sea cucumber is estimated to be US $ 60 million.
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| 26. | In China, sea cucumbers are farmed commercially in artificial ponds.
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| 27. | It normally lives inside a starfish or a sea cucumber.
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| 28. | Maybe visiting its cousins, the sea urchins and sea cucumbers, over by that breakwater.
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| 29. | This species has a commensalistic relationship with certain sea cucumbers.
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| 30. | Adult black sea cucumbers are normally either male or female.
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