This 23-acre marine park houses the Cayman Turtle Farm, destroyed in a 2001 hurricane. In huge tanks, various sizes of green sea turtles swim, submerge and clamber over each other, a mass of dark green shells and limbs. The big mammas weigh 300 to 600 pounds. Kids can carefully handle the yearling turtles in the touch tank, and families can swim in the Breaker’s Lagoon pool and snorkel in Boatswain’s Lagoon, a 1.3 million-gallon salt water lagoon that features a view into the predator tank that’s filled with sharks.