Our oceans are teeming with life.
But such life is also facing pressures: global warming, pollution, overextraction of resources. Here, an automatic compilation of DW content on marine life.
Most people know of corals along coastlines - but there are also beautiful corals growing in deeper waters. Researchers at the GEOMAR Institute in Kiel, Germany, are running tests to see how these corals react to warmer and more acidic waters. Results are mixed.
So far this year, more than 1,000 dolphin carcasses have washed up on beaches in southwest England, and on France's Atlantic coast. Local media have described the deaths as a mystery - but many scientists blame large-scale fishing trawlers.
The world's oceans are full of weird and wonderful creatures. We splash down under the waves for a glimpse at some of the less charismatic species, we find out what's behind Europe's mysterious dolphin deaths, and we meet a tiny undersea sociopath who likes to smash things.
Contention over post-Brexit environmental regulation is bubbling over as the UK withdraws from a European fishing convention. Campaigners are concerned that important cross-border marine protections may be rolled back.