Body about 4 times as long as wide. Dorsal coxal plates not visible on posterior pereonites; pleotelsonic formula 1 +2, first pleonite not longer than others. Pleotelson barely tapering to angular apex, twice as long as wide; dorsal coxal plate 7 acute. The colour is extremely variable, usually brown or dark green with patches of white. Up to 4.5 cm long.
Euidotea peronii, is the most commonly taken idoteid in shallow-water algal communities of southern Australia. It is especially common in drift weed in tide pools. Populations are often made up of individuals of different colours, usually brown or dark green with patches of white. Individuals can camouflage themselves according to the colour of the marine algae in which they live.
Tidal pools and rocky shores near or on brown seaweed, depths to 5 m.
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed