---
title: "Common Sea Slater"
description: "Ligia oceanica — Other animals. Ligia oceanica, the sea slater, common sea slater, or sea roach, is a species of isopod in the family Ligiidae."
canonical: https://animalchecklist.com/animal/common-sea-slater
last_updated: 2026-09-20
---

# Common Sea Slater

> Ligia oceanica — Other animals. Ligia oceanica, the sea slater, common sea slater, or sea roach, is a species of isopod in the family Ligiidae.

- Scientific name: *Ligia oceanica*
- Category: `other` (Other animals)
- Habitats: `sea` (Sea & coast)
- iNaturalist observations: 3822
- Wikidata: [Q638110](https://www.wikidata.org/wiki/Q638110)
- iNaturalist taxon: [55356](https://www.inaturalist.org/taxa/55356)

## Names

- en: Common Sea Slater
- de: Klippenassel
- es: Cochinilla de mar
- fr: Ligie océanique
- nl: Havenpissebed
- pl: Ligia oceaniczna

## Countries with the most observations

GB (1624), FR (864), ES (236), PT (234), IE (189), DK (139), DE (118), US (61), NO (51), SE (41), NL (36), CA (31)

## Summary

Ligia oceanica, the sea slater, common sea slater, or sea roach, is a species of isopod in the family Ligiidae. This isopod lives in the littoral zone and is abundant on the rocky shores of the North Sea, the western Baltic Sea, and the Atlantic coasts of Europe. This isopod is the largest species in the suborder Oniscidea, reaching 35 mm in length. Phylogenetic analysis based on molecular data, however, casts doubt on the placement of this species in that suborder, suggesting that the genus Ligia is more closely related to the marine isopods in the suborders Valvifera and Sphaeromatidea than to the terrestrial woodlice…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Ligia_oceanica

## Photo

![Common Sea Slater](https://animalchecklist.com/img/animals/common-sea-slater/medium.jpg)

Photo: Alison Westwood · CC0 · inaturalist — https://www.inaturalist.org/observations/366305129

## Machine access

`GET https://animalchecklist.com/api/v1/animals/common-sea-slater?lang=en` — see [openapi.json](https://animalchecklist.com/openapi.json).