The Race to Breed (E03)

It's summer in Antarctica, and with 24-hour daylight the race to breed is on as two million fur seals crowd the beaches of South Georgia. When the pups are born, ferocious bulls attack any intruders who challenge their females. Meanwhile, chinstrap penguins cross glacial streams and climb near vertical cliffs to feed their chicks as formidable leopard seals lurk. (BBC)