Decapodian

The Decapodians are a race of sentient, lobster-like creatures from Decapod 10.

Culture
Decapodians do most of their building with packed sand. Their government is a totalitarian dictatorship, and there is little freedom on their world, which leads many Decapodians to seek it on other worlds, like Earth. It seems that the Decapodian culture has taken over many things from Human civilization, including many Jewish stereotypes (although, because they're a form of shellfish, this is quite ironic).They sometimes settle matters of honor by Claw-Plach, a ritual battle to the death before a massive audience.

Anatomy
Like lobsters or crabs on Earth, Decapodians have no bones. Instead they have an exoskeleton—a hard, chitinous shell which gives their body the rigidity needed to move about. These shells—like seemingly most of their other organs—are not an integral part of the body, but are moulted and replaced when they grow too large. They may vary in colour from pink, red, or brown, and all hues in between. They have claws instead of hands and feet, and have a row of four small finger-like flaps that cover their mouths. The thorax has three ridges, possibly containing orifices, and ink pouches are set in the armpits. A blowhole is set on top of the head, and the males possess a decorative fin in the same place that can be erected at will in times of the mating frenzy. Internal organs are numerous and seem to be vestigial or redundant. There are, among others, four hearts, a gas bladder, an "empathy" bladder, a stink gland, two stomachs, one containing fresh water and the other containing salt water (vomiting from both of them is a sign of happiness), gonads in their necks, and a tiny brain in their rump, which takes over during the mating frenzy. Apparently Decapodians are very strong, and their claws are sharp enough to cut steel bars and similarly hard things (but not diamond filaments). Decapodians are cold-blooded, the blood appears to be light purple in colour. They also have an organ that gives off foul odors when they become bored.

Pearls
Like many Earth mollusks, Decapodians create pearls when irritants are introduced into their throats. These pearls are blue in appearance and can be used to make jewelry.

Reproduction
As with life on Earth, female Decapodians carry eggs, which are fertilized by the males. Like many sea creatures, their survival strategy is to produce massive numbers of offspring, rather than to protect a small number of children until adulthood. Decapodians have no concept of love, and enter into relationships only for reproduction. When their mating season arrives, each male attempts to attract a female with an erotic display in the same place as the humans does their erotic display—the beach. Successful couples will participate in the mating frenzy. After participating in the frenzy, they die a gruesome death.