Hitchhiker ID please

[Tat2d]

I have never seen anything like this. Looks to me like some sort of bivalve. Just like to know exactly what it is, if possible.

 

Thanks,

 

Bobby

 

 

 

[stylaster]

sponge and thorny oyster

[Islandoftiki]

That thing is cool. I want one.

[Tat2d]

sponge and thorny oyster

 

I googled thorny oyster, and most of the pictures show the "thorns" coming from the shell. This has a smooth shell and the "thorns" coming from the mantle:confused: It's really cool looking, whatever it is. I was planning on getting rid of the xenia on the topside of the rock it's on, now I'm not so sure about doing that.

[matty]

It looks like that is an old shell and both are sponges. Does the white and pink retract into the shell when touched?

[Tat2d]

Haven't touched it yet. It does retract(not fully, but suddenly and noticeably) when I hit it with the flashlight at night.

[matty]

If you look at the link below there is a picture of what it looks like you have. Scroll down towards the end of the page and there is a question and answer about it. They say it is a type of Jewel box oyster? Closest I could find. Very cool!

 

http://www.wetwebmedia.com/BivalveIDF3.htm

[Garrett]

If you look at the link below there is a picture of what it looks like you have. Scroll down towards the end of the page and there is a question and answer about it. They say it is a type of Jewel box oyster? Closest I could find. Very cool!

 

http://www.wetwebmedia.com/BivalveIDF3.htm

 

good find looks very similiar, could be it