In its latest version, Amin Rigi’s robotic lifeguard can convert itself into a hovercraft and bring a potential victim back to the shore.

The Indo-Pacific sailfish, a big-game fish that looks quite like a swordfish, holds the Guinness World Record as the fastest fish in the sea. It has b(...)

Michael Phelps: “I understand that’s going to take a lot of time for me to be able to prove to whoever I need to prove to that I am different, that I have changed. This week will be the first week that I can start that.”

As his life unraveled, the athlete rued that all he knew how to do was swim. “So I was just this little hole where a man should be,” he said.The speak(...)

Michael Phelps competes in the 400m Freestyle at the Arena Pro Swim Series in  Arizona. Photo: Chris Coduto/Getty Images

Olympic champion Michael Phelps suffered his first setback in his return to the pool after he failed to qualify for the 400 metres freestyle final i(...)

Miachsel Phelps has announced he intends to compete at Rio 2016. Photograph: Inpho

Michael Phelps has, for the first time, declared his intention to compete at the 2016 Olympics in Rio de Janeiro in a bid to add to his record 18 gold(...)

 Bruce Jenner after the 1,500 metres which sealed his win at the 1976 Olympic decathlon in Montreal. Photograph: Allsport UK/Allsport

Lining up for the 1,500 metres, the final event of the 1976 Olympic decathlon, Bruce Jenner had the gold in his grasp. Needing a time of four minutes (...)

Olympic swimmer Michael Phelps speaks to reporters after leaving court on Friday where he pleaded guilty to drink-driving. Photograph: Patrick Semansky/AP

American swimmer Michael Phelps, the most decorated Olympian of all time, pleaded guilty on Friday to driving under the influence of alcohol and recei(...)

Michael Phelps: “Swimming is a major part of my life, but right now I need to focus my attention on me as an individual, and do the necessary work to learn from this experience and make better decisions in the future.” Photograph: Stuart Palley/The New York Times

Watching Michael Phelps’ return to swimming was like worrying a loose tooth with your tongue. His comeback was a cause for nervousness for anyone f(...)

Michael Phelps leaves the pool after his seventh place finish in the men’s 100 metre freestyle final in California. Photograph: Harry How/Getty Images

For more than a decade, Michael Phelps was known for his numbing consistency. He won races in sickness and in health, despite bad starts, poor finis(...)

 Australian champion swimmer Ian Thorpe during an interview with  Michael Parkinson in London to broadcast on Australian TV channel TEN tonight. Photograph: Network TEN/EPA

Australian swimmer Ian Thorpe, whose five-medal performance at the 2000 Olympics in Sydney captivated his country, has revealed in an Australian tele(...)

USA’s DeAndre Yedlin gives chase as Belgium’s Eden Hazard closes in on goal during their last-16 game. His coach, Marc Wilmots, will be looking for some inspiration from the Chelsea midfielder.

The football talk in Brazil this week has been all about emotion, and how the gladiators of the national team are struggling to control theirs. You ca(...)