A German jazz singer has disappeared following a scuba dive in what is said to be the South Pacific’s largest underwater cave. Read more...

The longest-living marine vertebrates, the Greenland sharks, can survive for many centuries, but until now freshwater fish have not been known to live much beyond the age of 70. Read more...

The first half of Circle of Heroes, the USA’s first underwater military memorial, has been unveiled off Florida’s Gulf of Mexico coast. Read more...

A 28-year-old American scientific diver has died in an underwater incident in Alaska. Read more...

A scuba-diving family have recovered an iPhone X in full working order after two days’ immersion in a Derbyshire lake. Read more...

Five ancient shipwrecks, traces of three more and a 2500-year-old granite anchor pole from a “colossal” vessel have been found by maritime archaeologists diving off the eastern Aegean island of Levitha. Read more...

A diving instructor who had been returning to the UK from the Philippines to visit sick relatives has been imprisoned in Oman on unspecified charges for several weeks. Read more...

The UK provides migrating humpback whales with a welcome break, according to the findings of a new citizen-science project. It has matched for the first time a humpback spotted in home waters with one photographed in the Arctic – thanks to whale-watchers sharing photos on social media. Read more...

An underwater robot has swum into action for the first time in the UK to observe the enigmatic behaviour of basking sharks in Scotland’s Inner Hebrides. It has long been suspected that the species might breed there, and the hope is that the REMUS SharkCam might capture such an event on film. Read more...

Reef manta rays have a much bigger home range than previously thought, according to evidence provided by divers to researchers in Australia. Read more...