nightmare was swimming about under the water, close to a coral reef, looking at some fish, and looking for some food

after some time he found an anchor stuck between some coral on the ocean floor. He swam up to it and looked at it closer, seeing that it's damaging the coral quite a bit, looking up and seeing it's not attached to anything. He goes up to it, wrapping all his tentacles around it, and putting his arms around the stock in an attempt to move it