Could Spinosaurus swim? A new fossil with a scimitar-like head crest provides new evidence on the unsettled question.

From giant stick bugs to rarely seen sea creatures, these animal videos fascinated us—and led to new scientific discoveries. An orca calf and adult swim in the Norwegian fjords. Orcas have been among ...

Sand dollar exoskeletons are often found washed up after the animal has died. But this live individual has put on a hypnotic ...