what is this?

[creepingdeath086]

can anyone identify this for me? im not sure that it is a plant...its very thin and about 1-1.5 inches high and 1 inch wide...

http://members.lycos.co.uk/martysdomain/u.jpg

thanks

ps, some others told me it could be a tunicate or sea squirt but i would like a second opinion

 

[mesocosm]

Greetings All !

creepingdeath086,

It's a common sponge.

HTH.