Every 13 hours, the Bay of Fundy in Nova Scotia performs a record-breaking feat: The sea levels rise to the height of a four-story building! Witness the unstoppable natural cycle of the Atlantic tide and the diverse ecosystems it supports.

The sands along the coast of the Yucatan Peninsula are home to both a vast array of wildlife and a booming tourism industry. From protecting the fragile nesting cycles of sea turtles to moving huge bales of sargassum seaweed that wash up on beaches, learn how humans and animals coexist within this diverse ecosystem.

Many of Hawaii's beaches are the byproduct of unusual scientific events. The green sand of Papakole comes from a legacy of rich olivine deposits, while the ominous black sands of Punalu'u were forged from the fires of Mount Kilauea. Immerse yourself in the origin stories of some of the world's most inviting beaches.