Following concern about the long-term effects of suffering from Covid-19 infection, the UK Diving Medical Committee produced a scorecard to help divers assess their personal risk and signpost the steps to be taken in being signed off as fit to dive.

The inadvertent discovery of sea life on a boulder beneath an Antarctic ice shelf challenges our understanding of how organisms can live in environments far from sunlight, according to a team of biologists.

The critically endangered vaquita porpoise, a species endemic to the Sea of Cortez, is at severe risk of extinction due to illegal gillnet fishing for the critically endangered totoaba fish.