Crabs are a diverse bunch of crustaceans. Some, like the pea crab, are parasites so small that they spend their lives hiding inside oyster shells. Others are huge. The largest of Japanese spider ...

The ‘boxer crab’ or ‘pom-pom crab’ permanently holds a sea anemone in each claw. Researchers from Bar-Ilan University are trying to figure out why. Skip to main content.