A satellite-tagged great white shark named Lydia is the first to ever be tracked moving from one side of the Atlantic Ocean to the other; and researchers suggest she may be pregnant.
The shark is now heading towards the U.K., the BBC reported. Afterwards she may look for breeding grounds in the Mediterranean.
"I certainly think that it's possible for Lydia to make it to the [U.K.]" expedition leader Chris Fischer told the BBC.
Ocearch reported Sunday that Lydia had moved into the Eastern Atlantic, even though these waters are usually too cold to attract sharks.
"One thing we have [learned] just in the last year with sharks in the Atlantic is what we used to think was too cold simply is not," Fisher told the BBC. "Lydia has come over from Nova Scotia [in eastern Canada]... These sharks have the capacity to deal with very cold water temperatures for long periods."
The team believes the shark is gestating her offspring in the open water as she heads towards the "nursery," possibly near Turkey.
Other scientists on the research team do not believe Lydia is pregnant because blood tests taking at the time of her tagging came back negative.
The shark was described as "super-healthy" when she was tagged.Fischer believes she is in her 20s, having only recently becoming sexually mature.
"She looked like she had a bright future ahead of her - but I never would have dreamed she would lead us over to [the U.K.]," Fischer told the BBC. "It just shows that if we're going to look after some of these magnificent apex predators - the lions of the oceans - we're all going to have to work together. No one country can do it."
Data on Lydia's trek is available on the Ocearch website.
"The great thing about this is that the whole world gets to watch... people feel inspired when they're part of something," Fischer told the BBC.
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