Although bivalves are the main food source of walrus, some bigger individuals will eat larger prey, including seals. • Polar bears and orca attack walrus, mainly predating calves. The herd will ...

They do not usually attack humans, but there have been some rare incidents. At a wildlife park in China in 2016, a tourist and a zookeeper were killed by a walrus. The tourist had reportedly been ...

"Having a half-tonne heavy walrus - with sharp tusks - swimming among people is pretty risky," Dr Born says. What's more, walruses have been known to attack scuba divers and small boats - although ...