Great white sharks are displaying unprecedented behaviours, and experts can’t explain why. One of the ocean’s greatest apex predators has been entering the twilight zone way beneath the surface of the ocean, and far beneath the areas they normally feed in. The twilight zone, also referred to as the mesopelagic zone, is the area 200 to 1,000 metres down below the surface which is at least partly permeated by sunlight. The midnight zone, meanwhile, is found 1,000 to 3,000 metres down and is impenetrable to sunlight. Now, a new study published in the journal PNAS offered insight into the behaviours of 344 tagged predatory fish including great white sharks. Scientists would usually expect the creatures studied to dive to the deep scattering layer (DSL), which is full of small fish and other ocean life forms and therefore attracts more predators than other levels. However, there was also evidence that suggested predators dove down far deeper than the DSL, and scientists don’t know why. According to the research, great white sharks dive down to as deep as 1,128 metres. Camrin Braun is assistant scientist at the Woods Hole Oceanographic Institution and study lead. Braun told Live Science: "How, when, where they access the deep ocean certainly varies, but the clear anecdotal answer is that the deep ocean seems like an important habitat regardless of the predator species. It's clear there are good reasons for these animals to dive deep, otherwise why would they all do it? "There's good evidence for some species/situations in which diving deep is clearly for foraging," Braun added. "So that supported our expectation. However, we also find several cases where we can pretty definitively say the use of the deep ocean is not for feeding – or if it is it represents a totally different kind of predator-prey interaction or mysterious prey resource." The study could suggest that the twilight zone could be far more important to great white sharks and other predatory fish than previously thought. "If it turns out that there is indeed more biomass in the twilight zone than in all current marine capture fisheries combined then it's possible to imagine a kind of mesopelagic 'gold rush' to catch and use this biomass," Braun said. "There are many 'ifs' in this chain and many issues in making mesopelagic fishing feasible but it seems that biomass may be important for predators. Therefore, we really need to better quantify those links between predators and mesopelagic biomass before we can sustainably harvest/use those resources.” Sign up for our free Indy100 weekly newsletter How to join the indy100's free WhatsApp channel Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings

Napoli manager Luciano Spalletti is set to leave the club after guiding them to their first Serie A title in 33 years. President Aurelio De Laurentiis said that the 64-year-old, who took over the Partenopei in 2021, has asked to take a sabbatical and will leave the club with a year left on his contract. “He’s a free man, now it’s right that he continues to do what he wants. I thank him,” De Laurentiis told Italian broadcaster Rai as reported by Sky Italy. Napoli clinched their first title since 1990, when Diego Maradona led them to the Scudetto, with five games to spare. Spalletti’s final game in charge is set to be at home to Sampdoria next Sunday. Reports in Italy suggest Napoli will attempt to bring in former Barcelona and Spain head coach Luis Enrique to replace Spalletti. A number of their star players such as top scorer Victor Osimhen and centre-back Kim Min-jae have been linked with moves away from Naples this summer, with a host of Premier League clubs among those reportedly interested. Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live

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The dancers who filed a lawsuit against Lizzo have spoken publicly for the first time about the 'nuanced weight-shaming' they allegedly received from the singer. Arianna Davis and Crystal Williams appeared on NBC News, where they discussed the 'thinly-veiled' comments the body-positive singer would make about their appearance. "I just had this feeling that they had a problem with the way I was gaining weight and looking different and that I wasn’t 'the same' as when they first cast me", Davis says. "What I think people should take away is the fact that our experience is not an isolated experience." Sign up to our new free Indy100 weekly newsletter

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Al Roker has undergone his second knee replacement surgery, which had to be delayed after he was admitted to hospital for blood clots in his legs and lungs last December. The Today show weatherman, 68. has been reporting on the weather for the NBC morning show since 1996. Following his surgery, he returned to the programme on Tuesday (30 May). Roker has now said he is feeling “good” after the surgery on 9 May, which comes more than a year after his first knee replacement. He attended the Veuve Clicquot Polo Classic event in New Jersey with his wife Deborah Roberts over the weekend, which he said was his first public outing since the surgery apart from work. Speaking to People, Roker said: “[It’s] nice to be wearing nice clothes. Here we are. You can’t help but feel better.” Roker was rushed to hospital the day after Thanksgiving and remained there for nearly two weeks due to the blood clots. He told his followers on Instagram that he was admitted “with a blood clot in my leg which sent some clots into my lungs”. “After some medical whack-a-mole, I am so fortunate to be getting terrific medical care and on the way to recovery,” he said, thanking fans for their well wishes. In March, Roker said he “wouldn’t be alive” if not for Roberts, 62. He told PageSix: “I guess I know it now. I didn’t know it at the time. Deborah was great at keeping all that away from me so I thought I was doing OK but that was great because I was able to focus on getting better.” Roberts is the presenter’s second wife, who he married in 1995 after splitting from ex-wife Alice Bell the year before. He shares daughter Courtney, 35, with Bell, and two children Leia, 24, and Nick, 20, with Roberts. Read More Jessie J confirms identity of her baby’s father after ‘struggling to keep things private’ Husband of non-smoker, 24, who died two weeks after lung cancer diagnosis reveals single telltale sign How noise complaints became a very British obsession Pharmacist warns against one common hay fever habit 7 tips and tricks for hay fever relief A Place In The Sun’s Jonnie Irwin admitted to hospital amid terminal diagnosis

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Another one.