Filmmaker Patrick Dykstra's footage highlights the sheer size of the gentle aquatic giants.
When a killer whale off British Columbia became stranded on jagged rocks, a boater got creative and rigged a water pump to keep the animal wet.
When dolphins dive deep below the water's surface, they avoid decompression sickness likely because the massive sea creatures have collapsible lungs.
The remotely controlled vehicle on a Nautilus Live expedition spies the largest toothed predator on the planet.
A female western gray whale swam from Russia to Mexico and back again.
The juvenile female is only the second sighting in Australia and one of the few globally of the species.
Rescuers were forced to abandon efforts to save around 150 melon-headed whales that stranded on a beach on April 10.
The animals can fine-tune the scope of their echolocation calls to broaden or narrow their search for prey.
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