Kerama Islands National Park ("Kerama Blue" Crystal Waters & Sea Turtle Sanctuaries)

Category: Tropical Marine National Parks, Snorkeling & Sea Turtle Habitats | Location: 50-min high-speed ferry ride (Queen Zamami or Marine Star Tokashiki) from Tomari Port (Tomarin) in central Naha.

Lying merely 35 to 40 kilometers west of Naha City off the coast of Okinawa's main island, the **Kerama Islands National Park** (*Kerama Shoto Kokuritsu Koen*) encompasses a pristine archipelago of over 20 tropical islands and islet reefs. The waters surrounding this protected maritime haven are celebrated among international divers for their astonishing underwater visibility, frequently exceeding 30 to 50 meters. This sublime optical purity produces an unmistakable spectrum of luminous aquamarine and deep cobalt hues known universally as **Kerama Blue**. The dense, pristine coral ecosystems flourishing throughout the archipelago serve as a vital oceanic nursery, dispersing viable coral larvae across the wider Ryukyu Arc. The two primary inhabited islands, **Zamami Island** and **Tokashiki Island**, offer untouched ivory-sand beaches and the gentle, unhurried pace of traditional Okinawan island life. At Zamami's world-famous Furuzamami Beach, snorkelers can wade into waist-deep water just steps from the powdery shoreline and find themselves instantly enveloped by teeming clouds of tropical clownfish and butterflyfish darting through vibrant coral formations. At nearby Ama Beach on Zamami and Aharen Beach on Tokashiki, wild Green Sea Turtles regularly graze in the shallow seagrass meadows, allowing visitors to respectfully swim alongside these gentle marine reptiles in their natural sanctuary. While summer invites endless watersports including scuba diving, paddleboarding, and clear kayaking, winter transforms the Kerama Islands into one of the North Pacific's most vital breeding and birthing havens for **Humpback Whales**. From January through March, these gentle leviathans migrate south from Alaskan waters to nurture their newborn calves in the tranquil, warm bays of Kerama. Guided eco-boat tours offer thrilling opportunities to witness monumental breaching, fin-slapping, and spout bursts against the dazzling turquoise backdrop of the Kerama Blue seascape, creating an unforgettable ecotourism adventure.