crustacea

Shell Games: The Curious Habits of Hermit Crabs

While riding an Amtrak train along the coast just south of Santa Barbara I had an epiphany. It was sparked by the neatly parked RVs on the two-lane road along the shore below the train tracks. Are you ready? Here it is: Hermit crabs are the RVers of the crab world. Of course, human RVers can live independently of their vehicles while hermit crabs require a sea shell home for protection because only their heads, part of their carapace and the first three pairs of […]

Blend In or Brawl? Crabs as Misunderstood Crustaceans

Some of the sea creatures I’ve described for California Diving News are more than a little aggressive. Many crabs, however, prefer hiding to fighting even when equipped with those seemingly formidable defensive tools called claws. Like 75 percent of all animals, crabs belong to the phylum Arthropoda, which means jointed leg and includes not only aquatic creatures, but also many terrestrial ones, such as spiders, scorpions, centipedes and millipedes. The subphylum Crustacea includes crabs, lobsters, shrimps, barnacles, amphipods and isopods. Some isopods and a few […]

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