All dive schools in the area do excursions to Catalina island, leaving at 7am. It is two dives. The first is a wall - a 30 metre dive and the second a shallow dive called the aquarium. Usually around 70-90us$ plus dives. That covers transport, boat, food, soft drinks and rum or beer after you ave finished. There are many other sites in the Bayahibe area and some challenging.So your other option would be to go and stay there for a few days. Accommodation can be foundfor as little as 10us$ a night, and any of the dive schools will help you with this. The dives schools are in the village, away fm the all inclusives so you are best to contact them first. To get there it is bus to San Pedro, then change ffor La Romana, then change for Bayahibe. Journey time around 2-21/2 hours
Matilda