How fish evolved to walk

When you think about human evolution, there's a good chance you're imagining chimpanzees exploring ancient forests or early humans daubing wooly mammoths on to cave walls. But we humans, along with bears, lizards, hummingbirds ...

The shark, a predator turned prey

Sharks may strike terror among swimmers at the beach but the predators are increasingly ending up as prey, served up in fish-and-chips shops, sparking concern among environmentalists.

Fish out of water: Gene clue to evolutionary step

Two genes controlling a tissue protein may have played a role in the key period when fish shed their fins and became limbed land-lovers, a study published by Nature on Thursday said.

Walking sharks discovered in the tropics

Four new species of tropical sharks that use their fins to walk are causing a stir in waters off northern Australia and New Guinea.

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