Any idea what this is?

[Slo-blink]

Just found this little guy. Watched it for an hr. last night pulling in its appendages an cleaning them...

 

[Tahoe61]

Type of cucumber, harmless and very cool. It could be some type of basket star I suppose but the location makes me think cucumber.

 

[Reefing Madness]

Looks like a Basket Sea Star
Astroboa Ernae

 

[chris.scangarello]

You have a basket starfish

 

[Tahoe61]

Pretty sure it's a cucumber feeding, see below.

 

[Mike J.]

Pretty sure it's a cucumber feeding, see below.

+1^^^

 

[BlueWaterTropicals]

+1. Its a Sea Cucumber.

https://www.youtube.com/watch?v=VOPnr8BVQHc

 

[Slo-blink]

Thanks for the info. My setup is only 5 months old and I'm amazed at the stuff still poping out. Just last week I discovered a gorilla crab and two snails that I had not seen before....