Tierra del Fuego, Cape Horn, Chile
Surf froths around Cape Horn in Chile's Tierra del Fuego. This archipelago, which means "land of fire" in Spanish, is the meeting point of the world's two largest oceans, the Atlantic and the Pacific.
Light refracts through the calm, clear waters of the Cayman Islands. These islands are actually the peaks of the Cayman Trough, the Caribbean Sea's deepest trench.
Large Waves of the Southern Ocean
Roiled seas and big waves characterize the frigid waters around Antarctica. Most of the surface of Antarctica is harsh and barren, but the waters that surround it bustle with specially adapted plants and animals.
Island Coastline, Republic of Palau
A cloak of mist drapes a large wave as it breaks near shore on one of the islands of the Republic of Palau
Australian Seashore, Kalbarri
Waves at high tide crash on shore near Kalbarri National Park in Western Australia. Ocean tides are created by the gravitational effects of the moon and sun on the Earth. When the moon is full or new, attraction is high, and the oceans bulge outward, creating spring tides.
Moonrise Over an Iceberg
A massive iceberg juts from the stark expanse of an ice sheet as an orange moon looks on in the Bellingshausen Sea near Antarctica. This sea, part of the Southern Ocean, borders the west side of the Antarctic Peninsula, near South America, and is home to elephant seals and Adélie penguins.