Ligia oceanica
（重定向自Sea slater）
Ligia oceanica, the sea slater, common sea slater or sea roach, is a littoral woodlouse.
L. oceanica is oval, twice as long as broad and may reach up to 30 millimetres (1.2 in) in length, making it one of the largest oniscid isopods. Its colour may vary from grey to olive-green, and it has large compound eyes and long antennae, ⅔ as long as its body.