Snorkeling is not great in Costa Rica.
There are some spots that are great, namely Canos Island
Tina and I visited Canos a few years ago and experienced some of the best snorkeling. There are possibly some other areas that I'm not aware of.
Do you? Please add in the comments section. This tour was long, and we didn't actually snorkel at the Catalinas. We were near shore. Nothing much to see as visibility was murky at best. Not complaining, because a day in the ocean is way better than just about anywhere else. And, our guests really enjoyed themselves.
Your thoughts below....thanks