The shrimps use cavitation to stun their prey - small crabs, fish and worms - or to communicate with other shrimps.

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People along the Chesapeake Bay have lost their once-plentiful fish and crabs, mostly because algae has gotten fat on fertilizer running off from farms.

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Back on shore, the two-room Maria Mitchell Aquarium might be overlooked unless your kids are excited to see local fish and touch hermit crabs.

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We spent a long time in Louisiana at a fish house where the people actually take the crabs and so forth and then ship them out.

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Inside are the bones of countless fish and birds, along with several species of protected sharks and crabs.

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