critter ID

[KRL1973]

Anyone know what this is? (golf ball sized thing, somewhat translucent stuck on side of rock)

short clip of it taken at butterfly house
YouTube - mystery thing.wmv

thanks Ken L

 

[Troutmaster]

Looks like an egg sac of some kind, but I have no idea what kind, and I may be wrong.

 

[pacificgal]

Weird, could be an alien.
Or not.

 

[opisthobranch]

Grey Puffball Sponge Craniella arb.

Clinton

 

[KRL1973]

Grey Puffball Sponge Craniella arb.

Clinton

looked up pictures and that is a match.

thanks Clinton!