Tagged With filter feeding

All living whales are descended from terrestrial mammals, but how these aquatic creatures evolved into giant filter-feeders remains a biological mystery. New research shows that ancient whales had razor-sharp teeth similar to land-based carnivores -- an observation that's upsetting a prevailing idea that ancient whales used their teeth for filter feeding.

Researchers from Stanford's Hopkins Marine Station have developed a two-lensed camera that sticks to the backs of filter-feeding whales with suction cups. The new device has been used to capture unprecedented footage of whales in action, and it's offering new insights into the feeding and swimming behaviours of these aquatic beasts.