Fishermen's and sailors' tales have always been taken with a grain a salt. So, admittedly, we wouldn't believe this incredible story if the crew didn't bring back photos to match it.
In 2006, the crew aboard the 'Maiken', a fishing yacht, was sailing in the south Pacific Ocean when they spotted an off-color bit of ocean in the distance.
Maiken crew member Håkan Larsson wrote about the sighting on his blog: "After five miles we noticed brown, somewhat grainy streaks in the water. First we thought that it might be an old oil dumping. Some ship cleaning its tanks. But the streak became larger and more frequent after a while, and there were rocklike brownish things the size of a fist floating in the sea. And the water were strangely green and 'lagoon like' too."
But upon closer inspection, they realized that a thick layer of pumice stone was floating on the surface of the water, meaning they could sail right through it.
It looked like they were sailing right through a beach.
The crew soon noticed the field of pumice stone was growing larger, so they accelerated out of there.
Hundreds of yards away, the crew heard a faint rumbling and turned around to inspect. It turns out the pumice stone had risen to the surface from an underwater volcano that erupted just minutes after they left the scene.
They were witnessing the exact moment of an island being born, an extremely rare event to capture on camera.
It's not the only island formation to be captured on camera, however. In 2013, Japanese coast guard officials captured video of an underwater volcano erupting and forming a new island in the Pacific Ocean south of Tokyo. According to the Japan Meteorological Agency, the island is about 660 feet in diameter and is just off the coast of Nishinoshima, an uninhabited island in the Ogasawara chain.
Sadly, the island that the Maiken crew saw born had virtually disappeared when researchers went back to check on it weeks later. RIP little island.