Orcas are fearsome hunters who employ diverse strategies and work collaboratively when tracking down a meal.
Six gray whales have died in the San Francisco Bay in just the past week alone, bringing the total number of stranded whales to 15 so far this year as authorities rush to figure out what could be causing the sudden deaths.
A tour group encountered two whales and a pod of dolphins while riding Sea-Doos from Catalina Island to Long Beach.
From solar panels over canals to fashionable clothes with zero waste, watch "ourHome: Earth Month" to learn about conservation efforts near you and across the country.
A gray whale that was tangled in some netting was set free off the Rancho Palos Verdes coast.
A whale has been found dead days after it wandered into the waters of Long Beach's Rainbow Harbor, officials said.