The genus name Delphinapterus translates to “dolphin without a fin.” Instead of a dorsal fin, belugas have a challenging dorsal ridge, allowing them to swim easily under ice floes (floating ice sheets ...

At birth, beluga whales are 5 feet long, roughly 100 pounds, and dark blue-gray in color. Unmistakable as adults, their color lightens to white, and they have a dorsal ridge rather than a fin. Belugas ...

At birth, beluga whales are 5 feet long, roughly 100 pounds, and dark blue-gray in color. Unmistakable as adults, their color lightens to white, and they have a dorsal ridge rather than a fin. Belugas ...

Instead of a dorsal fin, belugas have a dorsal ridge, which allows them to swim under sheets of floating sea ice with ease—an adaptation that helps them hide from orca predators. (Their genus ...

The Western Hudson Bay attracts around 57,000 belugas each summer. These sociable whales, up to 15 feet long, migrate here every summer to give birth, nurse their young, and feed in productive waters.