wow ... nice clam! said:Sorry.. that gave me a chuckle......
There are a number of predators of clams, parasitic snails are the most common. They usually attack the base though, I've never heard of them on the mantle, though they will sit at the edge of where the mantle meets the shell.
Here is a link about white spot disease of clams.. this may be what you read about on that thread you found.
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1294324&highlight=spots
Have you tried brushing them off with your finger? This disease sounds like it would be a fading or lump in the flesh. If you can brush them off, it could just be sand.
Okay another chuckle.. nice to see a sense of humor similar to mine.
Yes I hope its not either, it sounds like its not something they recover from too often. If some are on the shell, see if you can get one off and let us know what it feels like. If its a parasitic snail, it will be hard. They come in all sizes depending on how old they are, from tiny to rice sized. It could also be detritus.
Keep us updated on your clam.. it'd be a shame to lose it![]()