We started early in the morning and was picked up at X' Tan Ha. When we arrived at Hol Chan, it was packed with several boats and lots of snorkelers. Our fun guides decided to go first to Shark Ray Alley, which was a wonderful decision as there was only one other boat there. There were so many nurse sharks feeding on the chum they threw in, it was incredible. We got to snorkel and see sting ray, nurse sharks (obviously), and lots of other fish. After we left Shark Ray Alley, off to Hol Chan, where we spent about 35 minutes with our guide snorkeling the area where we saw more sting ray, sea turtles. Our guide would swim to the bottom and get some of the fish to move out of the reef. We saw Jacks, groupers, gray snappers, angelfish, but we didn't see any seahorses. Definitely recommend.