Our accommodations provided us with unlimited diving. We just loaded the trucks and toured the island. There was some incredible diving on this island. Check out Hilma Hooker, Small Wall, Invisibles, Pink Beach, Sweet Dreams, Kapana, etc. A friend of ours had a local book that listed all the dive sites. Just pick any one of them. They all offer superb marine life.
We saw two baby sea turtles, a barracuda, a puffer fish, plenty of parrot fish, and two small octopi. The more lush environments are toward the southern tip of Bonare (like where Sweet Dreams is located). This island is highly recommended for divers and snorkelers alike.