Nudi?

[IIDRYWATERII]

Is this a Nudi? Good guy?

 

[Crabs McJones]

Looks more like Elysia Sp.

 

[ISpeakForTheSeas]

Looks more like Elysia Sp.

+1 - possibly Elysia obtusa or Elysia flava, but I'm not certain.

 

[WheatToast]

Looks more like Elysia Sp.

+1 - possibly Elysia obtusa or Elysia flava, but I'm not certain.

+1
From one of my other posts:
Looks like a harmless Elysia slug, which is not a nudibranch but still a type of sea slug. These will suck the “sap” out of some green algae and steal their chloroplasts to photosynthesize. I once had one that ate Codium, but ReefCleaners says they will also feed on Ulva, Penicillus, and hair algae. Be careful to make sure your pumps and inlets are protected to prevent the slug from being sucked up.

Elysia obtusa:

Elysia viridis:

 

[TangerineSpeedo]

+1
From one of my other posts:
Looks like a harmless Elysia slug, which is not a nudibranch but still a type of sea slug. These will suck the “sap” out of some green algae and steal their chloroplasts to photosynthesize. I once had one that ate Codium, but ReefCleaners says they will also feed on Ulva, Penicillus, and hair algae. Be careful to make sure your pumps and inlets are protected to prevent the slug from being sucked up.

I had a Elysia hedgpethi which is very similar to your viridis. Not really made for the surge tank... It would get picked up by the flow and be blown across the tank. My favorite was a Taylor which I grew from a dot to 3/4 of an inch. I have had 4 slugs and Nudi's that came in on seaweed and kelp. I made a little 3 gallon just for any new ones that come in... haven't had one since

 

[IIDRYWATERII]

Nice one thanks for info, put back in tank…..

 

[SlugSnorter]

Is this a Nudi? Good guy?

as people have said it could be an Elysia species. I would recommend looking out for coral irritation or "slugs" that are blending in with the colors and textures of coral just in case.