And while the Lab is sure to fix hearts, this next story might cause yours to skip a beat.
And that's because arctic sharks could be living in Belizean waters.
Earlier this summer a group of scientists found and documented one of the ancient animals in a very curious place indeed, here's that story.
There's been a very unusual discovery in Belizean waters, it happened when a PHD student from Florida International University went on a tiger shark tagging expedition off the coast of Belize. Research assistant Hector Martinez was with her when it happened.
Hector Daniel Martinez, Research Assistant
"When we pulled it up, I saw it coming up. It looked this wide and this long it looked short cause it was very wide, I can only see it's head, but as it got further up I stepped back cause it looked scary. It was something I've never seen before."
Unsure about the unusual fish, Hector Martinez shot a video to share with the PhD student's advisor:
Hector Daniel Martinez, Research Assistant
"When one of doctor Chapman's students sent the video to him, that's when he responded back and was this is not a six-gill shark, this is a green land shark."
Now, the curious discovery of this arctic shark in the Caribbean could change everything we understand about its migratory patterns and perhaps suggest that it can be found all over the world, wherever the water is deep and cold enough.
Hector Daniel Martinez, Research Assistant
"There's not much known about this shark migratory pattern, because they live in deep water and they are not coming up to the surface, so its a few tags that you could put on it. But we do know it likes cold water and so we caught it in the deep like 2,000 feet of water. The water down there is pretty cold."
And doubly exciting for the budding marine biologists is that Greenland sharks can live up to 400 years.
Hector Daniel Martinez, Research Assistant
"It's the oldest living animal on earth, they live up to four or five hundred years. That one we caught was like eight to ten feet, and if it's ten feet it's a hundred years old. So it's an old old, shark."
Martinez says he'll try to tag another but he's aware that he might be more likely to win the lottery than identify another Greenland Shark on what seems like a Caribbean vacation.
