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For a few weeks each summer, in a patch of blue water off the coast of Mexico, something extraordinary unfolds. Whale sharks arrive in their hundreds. They come for a feast. The sea fills with the tiny eggs of spawning fish, a drifting soup so rich that the largest fish on Earth gather shoulder to shoulder to gulp it down. Seen from the air the scene looks impossible. Dozens of giants cruising side by side at the surface, vast mouths held open, in numbers found almost nowhere

The water at Aliwal Shoal is the colour of strong tea, stirred up by the Indian Ocean swell. A few metres below the surface a ragged tooth shark hangs almost motionless in the current. Its mouth is slightly open. Rows of thin, snagged teeth are on full display. To anyone raised on shark films, it looks like the most dangerous animal imaginable. It is, in fact, doing nothing at all. It has no interest in the divers nearby. It is simply breathing, holding its place in the curre

How is climate change affecting shark populations? Quick Answer Climate change is altering ocean temperatures, currents, sea levels and marine ecosystems around the world. Scientists have found that many shark species are changing where they live, when they migrate and how they reproduce. While some species may temporarily benefit from warmer waters, many face increasing threats from habitat loss, declining prey populations and human activity. Why are sharks particularly vuln