A sea otter eats a clam that it has taken from the shallow sandy bottom of Elkhorn Slough. Because sea otters have such a high metabolic rate, they eat up to 30% of their body weight each day in the form of clams, mussels, urchins, crabs and abalone. Sea otters are the only known tool-using marine mammal, using a stone or old shell to open the shells of their prey as they float on their backs.
Species: Sea otter, Enhydra lutris
Location: Elkhorn Slough National Estuarine Research Reserve, Moss Landing, California
Image ID: 21609
Rugged Terrain of Isla San Pedro Martir, Sea of Cortez. Aerial photo. The large bird population deposits enormous quantities of guano on the island, resulting in the white appearance of the island contrasted with sparse vegetation. In the late 19th and early 20th century guano was heavily mined off the island and shipped as far as Europe for use as fertilizer. San Pedro Martir is seldom visited, having near vertical sides leaving only questionable fair weather anchorages in two locations. Landing access was possible near a small isthmus in the southeast of the island, but is now forbidden. In 2005, the island was classified along with 244 others as a World Heritage Site by UNESCO, and included in the Islands and Protected Areas of the Gulf of California.
Location: Isla San Pedro Martir, Sonora, Mexico
Image ID: 40401
Rugged Terrain of Isla San Pedro Martir, Sea of Cortez. Aerial photo. The large bird population deposits enormous quantities of guano on the island, resulting in the white appearance of the island contrasted with sparse vegetation. In the late 19th and early 20th century guano was heavily mined off the island and shipped as far as Europe for use as fertilizer. San Pedro Martir is seldom visited, having near vertical sides leaving only questionable fair weather anchorages in two locations. Landing access was possible near a small isthmus in the southeast of the island, but is now forbidden. In 2005, the island was classified along with 244 others as a World Heritage Site by UNESCO, and included in the Islands and Protected Areas of the Gulf of California.
Location: Isla San Pedro Martir, Sonora, Mexico
Image ID: 40402
Rugged Terrain of Isla San Pedro Martir, Sea of Cortez. Aerial photo. The large bird population deposits enormous quantities of guano on the island, resulting in the white appearance of the island contrasted with sparse vegetation. In the late 19th and early 20th century guano was heavily mined off the island and shipped as far as Europe for use as fertilizer. San Pedro Martir is seldom visited, having near vertical sides leaving only questionable fair weather anchorages in two locations. Landing access was possible near a small isthmus in the southeast of the island, but is now forbidden. In 2005, the island was classified along with 244 others as a World Heritage Site by UNESCO, and included in the Islands and Protected Areas of the Gulf of California.
Location: Isla San Pedro Martir, Sonora, Mexico
Image ID: 40407
Western landing and National Park buildings on Santa Barbara Island, part of the Channel Islands National Marine Sanctuary. Santa Barbara Island lies 38 miles offshore of the coast of California, near Los Angeles and San Pedro.
Location: Santa Barbara Island, California
Image ID: 23563