The sea lettuce is brown and translucent. When you hold it, it is very thin and slimy. It tears easily. It is very delicate. This piece was 5-6 inches long.
The sea lettuce was found in a tidepool. It lives in salt water. It was not attached to anything.
I wonder what kind of sea weed it is. I wonder if you can use it for anything. Does it attach to rocks or sand or anything?