Filmmaker Patrick Dykstra's footage highlights the sheer size of the gentle aquatic giants.
Skin is the biggest and heaviest organ, and for these 10 animals, it holds super powers beyond the norm.
The giant squid's imposing size and fearsome appearance has long cast them as predatory monsters in human imaginations and fictional depictions.
A female western gray whale swam from Russia to Mexico and back again.
A team of Australian and New Zealand researchers has tracked scores of blue whales off Antarctica, as the world's largest animals began their songs.
Some females (including women) often live beyond their child-rearing years because their wisdom improves the survival of others.
While in pursuit of a poaching vessel, a conservation ships encounters a creature never caught live on camera before.
The whale's birth is encouraging news for the pod, which lost a pregnant female earlier in December.
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