From a refreshing dip on a hot summer’s day to snorkelling, diving and surfing, people around the world are drawn to the ocean. But lurking beneath the waves are lots of not-so-friendly sea-dwellers, ...

Brine pools, extremely salty, oxygen-free underwater lakes, are lethal to most marine life but teem with resilient microbes.

A new study says an amount of plastic “smaller than you might think” in the guts of seabirds and aquatic animals can be fatal, the first time that researchers say they’ve quantified how much can be ...