Can you help me identify this?

[SkipperJohn]

I did my 4 OW dives in Aruba last week and on at least 3 of them I saw this several times.

I have more pictures if this isn't enough for identification. In fact I have some video as I swam over it.
It looked like bubble wrap. Translucent and clung to mostly coral. I saw it in depths ranging from 35 to 55 feet.

 

[archman]

Ooh! That's a LOVELY colony of sea squirts. The genus is Clavelina.

Attached to coral you say? Hard coral?

 

[SkipperJohn]

Here's another shot.

I don't know if any were attached to hard coral, but plenty were attached to portions of a wreck I dove in the area (The Antillas). It seemd they were just about everywhere.
Thanks for the info!

 

[archman]

Ah. The sea squirts are attached to what looks like some old gorgonin branches from a dead soft coral. Some encrusting fire coral appears to be fighting it out for space on there as well.

I prefer to root for the sea squirts, but that damned fire coral is pretty tenacious. The squirts can beat it out in shaded spots.