I met up with the dive people while they were doing a dive master course in the pool. I spoke with Bernardo, a friendly fellow who explained the dive tours they have. I thought the prices were really reasonable: $70US for a 1-tank open water dive.
We booked the turtle snorkel tour, $40 US pp for 1 1/2 hours. We thought the price was reasonable. They took us to Akumal and showed us turtles, barracuda, sea urchins and a ray. Life jackets were included. We had a great time and we even got pictures, taken by a diver / photographer (Aurore, a charming woman from France) for another $40US. Normally I wouldn't spend that much on pictures, but her underwater photography far surpassed our murky green pictures.
Scuba Caribe needs to advertise more the tours and services they offer. I knew where they were all along, but I wasn't motivated to go see them until I saw this poster. Next time, I'll approach them and ask what sorts of services we can have.
Life jackets and free water sports equipment were free to use, but I had to call to get information. It just needs to be listed more clearly, like in a pamphlet in our room or something like that.