I learned this trick in the last months I dove in the Red Sea. Hermit crabs. They live in shells. I would see shells as we dove. I turned them over and waited. If there was a crab, it emerged to turn it’s house back – right side up. My dive buddies would laugh at me. No crab on the reef was safe from me. Mostly I would get or not get a satisfactory shot. Everyone else lost interest and stopped taking pictures of the crabs. I persisted. Look!
Eggs! Not once, but more than once. Actually, it happened more. But, in this instance you can see that the crab is in the act of laying its eggs. I think.
At least that’s my story and I’m stickin’ with it. You should be impressed. This was not easy. Really? The timing !!! I was there, I will readily admit purely fortuitously. But there!!