The Sausalito-based Marine Mammal Center is probing the death of a female gray whale that washed up on Black Sands Beach in the Marin Headlands.

Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape -- they're also vital engines for life on Earth. These inland waters 'breathe' oxygen, just like we do. But a new study ...

Some octopuses can leave the water for brief periods, but why is the octopus purposefully crossing the beach to squeeze into this black hole?