Isaac Hale Beach Park (Pohoiki)

Isaac Hale Beach Park at Pohoiki on the Big Island of Hawai'i is a remarkable coastal geothermal site where chloride-rich warm water flows into the ocean and creates naturally heated tide pools along a black lava coastline formed largely during the 2018 Kilauea eruption, which dramatically reshaped the coastline of lower Puna. The interaction between volcanic geothermal energy and the Pacific Ocean creates a unique bathing environment where warm and cool water mix in a raw, newly formed volcanic landscape. The extraordinary geological youth of the Pohoiki coastline — parts of it mere years old — and the ongoing volcanic activity of Kilauea make this one of the most dynamically evolving thermal coastal environments on Earth.