The video shows a person scuba diving underwater, holding a crab in their hand. The diver is wearing a black wetsuit and is holding a flashlight in their other hand. The water is murky and the visibility is low, but the diver is able to see the crab clearly. The crab is brown and appears to be alive. The diver moves slowly and carefully, examining the crab before placing it back in the water. The video ends with the diver swimming away from the crab.