Clear-Water

A boat trip to a partially submerged volcanic crater 3 miles offshore with some of the clearest water and best snorkeling in all of Hawaii. Visibility often exceeds 150 feet and the protected interior of the crescent-shaped crater is calm and teeming with tropical fish. Kids are amazed by the underwater visibility and the sheer number and variety of fish. Most tours include snorkel gear, breakfast, and lunch on board. Morning departures offer the calmest conditions. Sea turtles and sometimes reef sharks are spotted in the deeper areas.

A spring-fed swimming pool the size of 1.75 acres that stays a constant 72 to 76 degrees year-round and is so clear you can see straight to the bottom at 25 feet deep. The pool is home to endangered species including the Comanche Springs pupfish and kids can snorkel alongside them. The San Solomon Springs Courts offer motel-style rooms right on the pool deck. Recently renovated and reopened after years of construction.

Built on the dramatic cliffs above the clear blue waters of Possum Kingdom Lake in the Palo Pinto Mountains. The water here is unusually clear for Texas and kids can snorkel and spot fish in the shallows. The park has a swim area with a rocky beach and the Longhorn Trail offers moderate hiking with canyon views.

The crystal-clear San Marcos River flows through this park with three small drops known as Rio Vista Falls that kids treat like a natural water park. The river is spring-fed and stays a refreshing 72 degrees year-round. Families can tube from City Park upstream and float down to Rio Vista in about an hour. The park is free and has restrooms and easy river access from grassy banks.