Florida live rock

[xrayman]

I woke up this morning and found the clams or muscles that come on this rock sometimes on the sand bed.My question is should i be concerned?It was right beside another one.It was open a little so i think it is still alive.Any help would be appreciated.

 

[jawfishray]

http://www.jaxshells.org/track4.htm
If these are what you have, they are the most common surf clam there is, in the USA. They are completely harmless, and in fact are great diggers and filter feeders. They will breed freely and will not harm anything.
If you have an octopus or mantis shrimp, they love to eat these guys.
Good luck
Ray Boemler
www.peanutbutterjellyfish.com

 

[xrayman]

I don't know he's bigger than that and cover in crustaion.

 

[jawfishray]

Well my friend, if the shelled member is a bivalve you are fairly safe. I know of no predatory bivalves. They are a defensive creature by design. If a a whelk or cone shaped shell, then you may have issues.
Can you provide a photo or a photo reference? Do google cross check and post an image link.
Ray

 

[xrayman]

Will he be ok in the sand bed that is were it is now?