The larvae of many groups of mantis shrimp are poorly known. Polarization sensitivity has also been observed in species of octopus, squid, cuttlefish, and mantis shrimp. Also, if the aquarist is unlucky, a mantis shrimp. The huge diversity seen in mantis shrimp photoreceptors likely comes from ancient gene duplication events. Stomatopods, also known as mantis shrimp, are among the world's most aggressive crustaceans. Cuttlefish, some beetles, and mantis shrimp can also perceive the polarization of light. The peacock mantis shrimp is a species of mantis shrimp that has a dactyl club. Some saltwater aquarists keep peacock mantis shrimp in captivity. These colour filters allow the mantis shrimp to see with diverse colour vision. Crabs, shrimp, mantis shrimp, skates, and bivalves are infrequently eaten. Mantis shrimp live in burrows where they spend the majority of their time. The mantis shrimp possesses arguably the most complex visual system in any species. This configuration enables mantis shrimp to see objects with three parts of the same eye. A piece of live rock not uncommonly conveys a live mantis shrimp into an aquarium.