Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

A new freediving world record has been set by Ukrainian diver Kateryna Sadursk. She made history at the Blue Element International Freediving Competition which was held in Scott’s Head Bay, Dominica ...

Copyright 2025 BBC. All rights reserved. The BBC is not responsible for the content of external sites. Read about our approach to external linking.

Deep ocean freediving is wild enough—but throw in sharks, and you’ve got a heart-pounding underwater experience I’ll never forget. FBI Scrambles Over Mysterious Stand in Trump Airspace Brian Kelly ...

Pavlopetri lies under five meters of water, making freediving for amateur divers easy. Credit: Filio Kontrafouri / Greek Reporter Undisturbed from the summer crowds, Pavlopetri lies peacefully under ...

Community driven content discussing all aspects of software development from DevOps to design patterns. Git isn’t hard to learn. Moreover, with a Git GUI such as Atlassian’s Sourcetree, and a SaaS ...

With training, people can hold their breath much longer than most realize, allowing us to dive to remarkable depths underwater. The “mammalian dive response” causes physiological changes to the body, ...

With humidity hanging in the hot afternoon air like a soggy blanket, visitors at the Oro Valley Aquatic Center were quick to strip down to their swimwear and hop into the pool. Melissa Ponder bundled ...

Alessia Zecchini, a freediving star from Italy, has set 35 world records and won 17 gold medals. Her story is both amazing and sad, especially the tragedy in the Blue Hole of Egypt. The Netflix ...

While we've seen a number of wearable underwater propulsion systems, they've typically been strapped to the user's arms or legs. The newly refreshed CudaJet is different, in that it's a true ...

A group of women on South Korea's largest island, Jeju, follow a unique tradition to put food on the table: They freedive to depths of nearly 33 feet (10 meters) without using any special equipment.

A photographer shares the epiphanies she has had while chronicling underwater jungles off the California coast Avery Schuyler Nunn The kelp forest is my favorite ecosystem on Earth. I first began ...