Bought my 1st claim a crocea few days ago. Need some advice from the claim experts. I wanted to move it from sandbed to higher up on a rock. When I picked up the clam holding the shell it did not close. Only when I gently apply some pressure then it closed abit. Is this a bad sign? I know it is still alive cuz it started to open wide when left alone and the exhalant valve is moving. When fishes swim pass it will suddenly close and open abit. But after a while it appear quite bo chap - dun seemed to be disturbed by passing fishes. Read in this forum that when touched or when fishes pass by, or when light changed, a healthy clam will close suddenly with some force.