Life in the Arctic is brutal. Food isn't always readily available, so the fight for food can turn ugly pretty quick. An encounter between a male polar bear and a mother with her cub turns ugly pretty quick. After taking off with her cub after they got too close to the male, it doesn't take long ...

The gray whales of San Ignacio Lagoon, Mexico are known for how often they approach small boats and seek human interaction. This particular encounter shows how friendly these whales can be - with a mother whale helping lift her calf out of the water - as they approach tourists from below This ...