Carlsmith Beach

Carlsmith Beach Park is one of the Big Island's best-kept secrets, tucked along the Hilo coastline and renowned for its sheltered, spring-fed tidal pools and lagoon-style waters. Unlike the pounding surf found at many Hawaiian beaches, Carlsmith's naturally protected coves create exceptionally calm conditions that make it ideal for swimmers of all skill levels, snorkelers, and families with young children. The crystal-clear water offers remarkable visibility, and the rocky reef edges teem with colorful tropical fish and vibrant coral formations. Perhaps the biggest draw at Carlsmith is the remarkable population of Hawaiian green sea turtles — honu — that frequent the area. These gentle giants are commonly spotted resting on the rocks or gliding through the lagoon, offering unforgettable wildlife encounters that feel completely natural and unscripted. The lush, tree-shaded park grounds surrounding the beach provide welcome relief from the tropical sun, with grassy areas perfect for a picnic lunch after a morning in the water. Guests staying at Ala Kai will find Carlsmith Beach a wonderful day-trip destination, just a short drive from the property. It's worth arriving in the morning when the water is at its clearest and the turtles are most active. The park has restroom facilities and parking on-site, making it a hassle-free outing. Bring your own snorkel gear for the best experience, and remember to keep a respectful distance from the sea turtles as they are a protected species — viewing them is a privilege, not to be taken lightly.