Section

Diving

Scuba, freediving and the people who go under: safety, training, incidents and the water itself.

Page 2

Diving

Breathless and Coughing Pink Froth After a Dive: Immersion Pulmonary Edema Explained

Fluid can flood the lungs of a fit, healthy diver in cold or calm water alike. What immersion pulmonary edema is, who gets it and why mild symptoms should never be shrugged off.

Oct 17, 2026/3 min read

A scuba diver in a dark wetsuit rising through clear blue water with a column of bubbles above, photographed off Cozumel, Mexico, on 31 January 2016, a file photograph illustrative of diving and not of any case of the condition

Diving

Your Gas Consumption Is Not One Number: Why Depth, Cold and Nerves Change It

A diver's surface air consumption rate looks like a fixed fact. It is a moving average that depth multiplies and stress inflates, which is why reserves exist at all.

Oct 16, 2026/3 min read

A close-up of a depth gauge reading in metres above a submersible pressure gauge reading in bar on a scuba console, photographed on 10 July 2017, a file photograph of the instruments used to track gas

Diving

SS United States Reef Sinking Targeted for November: What Divers Should Know

Okaloosa County says the 990-foot liner will go down off the Florida Panhandle in the second week of November. The upper decks sit in recreational range, the hull does not.

Oct 16, 2026/2 min read

The weathered bridge wing and upper deck of the SS United States, rust-streaked white paint under open sky, photographed on 19 February 2025 on the morning she was towed out of Philadelphia, a file photograph of the ship and not of her preparation or sinking in Florida

Diving

Divers Excavating Off Kekova Find a Wreck Believed to Be the World's Oldest, Turkey Says

Turkish archaeologists say a wooden cargo ship lying about 30 metres down near Kekova Island sank 4,400 to 4,700 years ago. Its hull is gone, but the jars it carried remain.

Oct 15, 2026/2 min read

Turquoise water along the rocky shore of Kekova with the stone ruins of Simena above it, photographed on 24 June 2023, a file photograph of the coast near the site and not of the wreck or its excavation

Diving

Bleached Corals Recovered After Touching a Healthy Clone, Stanford Lab Study Finds

Fragments of one coral species regained their algae within days or weeks of contact with a genetically identical healthy partner, though the trick is unlikely to work on whole reefs.

Oct 15, 2026/2 min read

A bleached pale brain coral on a reef in the Florida Keys, photographed in 2023, a NOAA file photograph illustrative of coral bleaching and not of the Stanford laboratory experiment

Diving

Black Swallower Filmed With a Hugely Swollen Belly 1,259 Metres Down Off Trinidad and Tobago

Footage from a remotely operated vehicle shows a deep-sea fish carrying a meal far larger than itself, one highlight of the first Caribbean-led deep-sea expedition in the country's history.

Oct 13, 2026/2 min read

A preserved black swallower, Chiasmodon niger, with its stomach distended, photographed in September 2018, a file photograph of the species and not of the animal filmed off Trinidad and Tobago

Diving

Molchanov Dives 137 Metres and Torocsik 108 Metres at Freediving's Limassol World Championships

Two depth marks fell at the AIDA world championships in Cyprus, one in constant weight for men and one in free immersion for women. Both still await ratification.

Oct 10, 2026/2 min read

A freediver in a dark wetsuit descending head first along a rope in clear blue water off Moalboal in the Philippines, published in April 2012, a file photograph illustrative of depth freediving and not of the Limassol championships or either record holder

Diving

Playing Recordings of a Healthy Reef Drew More Coral and Fish Larvae to Artificial Structures Off Hawaii

Two Scripps studies in Kaneohe Bay found coral larvae settled most near an underwater speaker, and fish larvae arrived four to 14 times more often than at an identical silent site.

Oct 9, 2026/3 min read

An aerial view of Coconut Island and the reefs of Kaneohe Bay, Oahu, Hawaii, where the experiments took place, photographed on 18 May 2017

Diving

Autopsies Say Five Italian Divers in Maldives Cave Died of Anoxia, Italian Report Says

An expert report for Italian prosecutors lists anoxia as the cause of death for the five divers lost in a Vaavu Atoll cave in May. Why they ran short of gas is still unanswered.

Oct 6, 2026/3 min read

A small palm-covered island with a white sand beach seen across turquoise water at Vaavu Atoll in the Maldives, photographed on 5 November 2012, a file photograph of the atoll and not of the cave or the recovery

Diving

Blacktip Sharks Can Hear a Sound From Nearly 250 Feet Away and Swim Straight Toward or Away From It

A Florida Atlantic University study of free-swimming blacktip sharks off Palm Beach County found the animals could detect low-frequency underwater sounds from 74 metres away and change course in response, the clearest field evidence yet of shark hearing range.

Oct 1, 2026/2 min read

A blacktip shark, Carcharhinus limbatus, the species studied off Palm Beach County, photographed in the Bahamas in March 2007 and not one of the sharks tested by Florida Atlantic University

Diving

A Sea Turtle Species Never Recorded Nesting in the United States Laid Eggs on a Southern California Beach

An olive ridley sea turtle, a tropical species whose nearest known nesting ground is in Baja California, dug a nest near Seal Beach in September, the first confirmed sea turtle nest ever recorded on the US West Coast.

Oct 1, 2026/2 min read

An olive ridley sea turtle, the species that nested near Seal Beach, photographed in March 2023 and not one of the animals involved in the California nesting event