Cottrell Key Key is north of Key West on the gulf side, and there is a lot of rocky structure and many large coral heads. There is also wreckage from possibly a ship of some sort. Although on average the water is not as clear here as the snorkeling spots that are offshore closer the gulf stream, the water can be reasonably clear with around 20 feet of visibility.

Much of the structure is in less the 15 feet of water and in some places closer to 8 feet deep. You will see a variety of snapper and tropical fish here.  We also saw a jewfish, nurse shark and a school of small cero mackerel. There were also schools of small minnows in some areas.