Took my family of 4, including two kids age 8 and 12 for the morning snorkeling trip. They had never snorkeled before and took to it quickly. The crew of the Marquesa was fun, informative, and knowledgeable. The reef is beautiful, the boat is large, and it wasn't too crowded.
We chose Sebago and glad that we did . Unlike Fury, they don't press you to sign up for a tour while walking down the street. They speak with their quality of tours.