Id please

[uhgster1]

Just showed up out of nowhere. I haven’t made any additions to the reef in quite a while. Is it a sea hare or something to worry about?

 

[KJ]

Hard to tell from the picture.
https://www.google.com/search?q=ely...Q_AUIBigB#safe=off&tbm=isch&q=elysia+aquarium

 

[uhgster1]

Well, now I know why I didn’t notice it before. It’s at the base of the cora above the orange spot. Talk about good camo.

 

[KJ]

Elysia sp. good CUC Feed on filamentous algae and Caulerpa.

 

[uhgster1]

The camera on this iPhone X is impressive

 

[uhgster1]

It’s not going to get huge, is it?

 

[KJ]

The camera on this iPhone X is impressive

Nice pic

 

[KJ]

It’s not going to get huge, is it?

No

 

[uhgster1]

I’m just amazed that it’s in the tank. I dip and re-dip my coral before I place it. It must’ve been microscopic and imbedded at some point.

 

[rkpetersen]

Agree with Elysia, aka Lettuce Slug. Your hitchhiker is plain and not super frilly, but sometimes these slugs can be quite beautiful.

Voracious algae eaters, including bryopsis. I recently had a small outbreak of bryopsis, bought 8 lettuce slugs, 2 weeks later all bryopsis (and most other algae) is gone and I'm concerned that the slugs will now starve.

Lettuce Slugs are interesting. They're not nudibranchs; they have no external gills, actually no gills at all; gas exchange is through the skin surface, thus they need the larger surface area created by the frills.