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Helmet Crab Video Stock Footage
C. cassivelaunus lives buried in sandy substrates, where it feeds on the infaunal invertebrates such as polychaete worms and bivalve molluscs. It uses its two antennae to form a breathing tube that allows oxygenated water down into the substrate. The chelipeds of males are much longer than the body, while those of females are only about as long as the carapace.
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