LONG BEACH (UNITED STATES) - On a boat off the coast of California, Sara Lesser gazes wistfully at dozens of dolphins playing in the vessel's wake. This summer, extreme heat is making such a scene increasingly rare.
On daily tourist boat trips, "the number of whales and dolphins we're seeing is less than we would on a normal year," Lesser, a 39-year-old naturalist at the Aquarium of the Pacific in Long Beach, told AFP.
