Migrating Sting Rays!

There are around 70 species of stingray in the world's oceans, but these cow-nose rays (Rhinoptera bonasus) have distinctive, highdomed heads, giving them a curiously bovine appearance.
But despite their placid looks, they are still armed with a poisonous stinger, which can be deadly to humans (even though sharks, their main predators, are more likely to provoke them).
The stinger, a razor-sharp spine that grows from the creature's whip-like tail, can reach almost 15 inches in length and carries a heady dose of venom.
It was a similar stinger that killed the hugely popular Australian naturalist Steve Irwin in 2006