Visit Whale Overlook, Cabrillo National Monument, California

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Each winter, the Pacific gray whales pass by the western overlooks of Cabrillo National Monument. After spending the summer feeding in the food-rich waters of the Arctic, the whales swim south along the coast to the bays of Baja California, where they mate and nurse their young. Along the way, they pass Point Loma and Cabrillo National Monument, where you can witness their annual winter journey. Interesting Whale Facts: Adult Pacific gray whales are 30 to 50 feet long and weigh from 20 to 40 tons. Baby gray whales average 15 feet in length and weigh about a ton. A mother gray whale's milk is more than 50% fat. Gray whales live 20 to 40 years on average, and some live 60 years. They reach sexual maturity at eight years. Gray whales make a series of grunts, clicks and low rumbles to navigate and communicate among themselves. They don’t ‘sing’ elaborate songs like humpback whales. Instead of teeth, gray whales have long sheets of baleen (made of the same material as your fingernails) hanging from the roofs of their mouths. They use these comb-like sheets to filter food from the water. Gray whales eat tiny animals called amphipods. Millions of amphipods live in the muddy Arctic seafloor. Lying on its side, a gray whale slurps up mouthfuls of mud and water, then filters out the amphipods through its baleen. A gray whale’s skin is dark gray. But it is mottled with scars and patches of light-colored barnacles growing on its back. Each whale has its own distinctive pattern of barnacles and scars, and scientists use these patterns to identify individual whales. Gray whales have six to 12 knobs, or bumps, along the tops of their tail ridges instead of a fin like some other whales. Killer whales, large sharks and people are the gray whales only known predators. Gray whales were nearly hunted to extinction in the 19th century. Gray whales have been protected from exploitation by the International Whaling Commission since 1946. As a result, current populations are considered close to their pre-exploitation numbers.

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