Need help ID'ing this hitchhiker

[CoralNutter]

As the title says looks like some kind of Nudi, anyone here know if its
if i need to take action.. i dont see them on any of my corals there is about 5 of them on different places of my live rock. Here are some photos..

<a href="http://s1104.photobucket.com/user/FishNutter/media/20160829_192237_zpsrimruhzw.jpg.html" target="_blank"><img src="http://i1104.photobucket.com/albums/h330/FishNutter/20160829_192237_zpsrimruhzw.jpg" border="0" alt=" photo 20160829_192237_zpsrimruhzw.jpg"/></a>
<a href="http://s1104.photobucket.com/user/FishNutter/media/20160829_192215_zpshj5q1jcn.jpg.html" target="_blank"><img src="http://i1104.photobucket.com/albums/h330/FishNutter/20160829_192215_zpshj5q1jcn.jpg" border="0" alt=" photo 20160829_192215_zpshj5q1jcn.jpg"/></a>
<a href="http://s1104.photobucket.com/user/FishNutter/media/20160829_192211_zpssniwnshk.jpg.html" target="_blank"><img src="http://i1104.photobucket.com/albums/h330/FishNutter/20160829_192211_zpssniwnshk.jpg" border="0" alt=" photo 20160829_192211_zpssniwnshk.jpg"/></a>
<a href="http://s1104.photobucket.com/user/FishNutter/media/20160829_192135_zpswzswkll1.jpg.html" target="_blank"><img src="http://i1104.photobucket.com/albums/h330/FishNutter/20160829_192135_zpswzswkll1.jpg" border="0" alt=" photo 20160829_192135_zpswzswkll1.jpg"/></a>

 

[pagojoe]

It's harmless.

 

[ginpang]

Need help ID'ing this hitchhiker

Elysia obtusa ? Seems to have a pretty wide distribution and hitchhike on freshly imported live rock and corals.


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[jraker]

Some sort of harmless elysia.

 

[Dkuhlmann]

It looks like a hare of some sort with the bunny ears

 

[SeaCucumberFan]

Elysia. Harmless little cool slugs

 

[CoralNutter]

Thanks a lot guys thats great they are harmless because i really like watching them lol

 

[hotelbravo]

they feed on algae like bryopsis and sometimes hair algae. without algae they will die.