Homebrew Cacrorumite Species Details

A crab with a human-shaped body that comes up like a centaur's, but the human part of the body also has an exoskeleton, and the entire body is crab-coloured. They almost always live on the coast, and they frequently are sailers. The picture is not very accurate, but I can't seem to find anything better (specifically that besides having exoskeleton on them, the hands should be normal hands). They do take up dwelling in the underwater cities, but more than do that live on the coast. Some people have natural prejudices against them due to how different they look from any other kind of people, but it is not supper wide-spread. 

Race picture is from Magic the Gathering's Deep-muck Desperado. 

Cacrorumite Traits

These abilities come from your crab-like form.

Natural Armour

You have a base AC of 16, but you can't wear armor because none of it fits your strange body shape. 

Crustacean Build

You have advantage against anything that would cause you to become prone, but it takes all of your movement speed to right yourself if you are prone. You are unaffected by difficult terrain due to your many legs. 

Ability Score Increases

You increase one score by 2 and increase a different score by 1, or increase three different scores by 1.

Sailing Affinity

You have proficiency with vehicles (water) and navigator's tools. You also can hold your breath for up to two hours. 

Languages

You know common and one language of your choice. 

Speed

You a 30 foot walking speed and have a climbing and swimming speed equal to your walking speed.