Two Crabs Underwater

Two Crabs Underwater

A couple of Crabs hiding in crevices in a rock that's covered with water. You have to actively look for them to notice them, as otherwise they blend in very well with the rocks and the water.

What do I like about this photo? It shows details that the naked eye would have a hard time perceiving. It also shows how well the Crabs integrate with the rock for their protection.

What would I want to improve? More depth of field would have more of the Crabs in focus, which would work well in this photo.