Hi there,
Every single dive I do in the Gulf of Thailand I bump into these things. I can’t figure out what is is. Because they are attached in a chain I thought at first it were maybe eggs but it can’t be. Then I thought it might be some sort of Ascidian but it’s hard to believe as ascidians are solitary during ‘medusa’ phase as I understand.
Anyone familiar with the creatures on the image? Thanks. Bart

It looks like a type of jelly fish to me.

Hi Bart,

To me this looks like a colony of salps, see the following URL on wikipedia.

http://en.wikipedia.org/wiki/Salp

Thanks for the reply. So I wasn’t completely wrong at first thinking it was an ascidian. Never thought of a Salp.
Cool! thanks again.