I'm probably the only one who doesn't know what this is...

[Wayne_Sargent]

Photo at 3-Tree-Point Washington at 20ft depth and 46 degrees... about 3-4 inches long... shot with C-5060 in PT-020 housing... F7, 1/30sec, ISO-80, FL27mm, lensFL5.7mm...

http://www.g0atnet.com/dive/sandeggthing99kb.jpg

what do we call it?

 

[archman]

Ha! Looks like the trophosome from a giant tube worm. You're not next to a hydrothermal vent are you?!

 

[Wayne_Sargent]

no hydrothermal vents... it looked like a rock with a smile.. or maybe a cooked potato with lips.. mr potatohead maybe?

 

[PhotoTJ]

Looks like a rock scallop.