4Kilauea Beach, Hawaii, USA
Unlike typical beach dangers, Kilauea Beach is hazardous because it sits next to one of the world’s most active volcanoes. When Kilauea erupts, molten lava flows into the ocean, creating explosive reactions.
The rapidly cooled lava shatters into sharp fragments, and the steam contains toxic gases capable of harming the lungs and eyes. Even on calm days, the coastline here can shift suddenly due to volcanic activity, making it one of the most volatile beaches on earth.
