Rare Footage: Two Megamouth Sharks Captured on Video for the First Time

Fishers captured a rare video of two megamouth sharks swimming together off the coast of San Diego, which may show the deep-dwelling beasts in a courtship ritual. The elusive megamouth shark can grow to be 18 feet in length and weigh up to 2,679 pounds. In the 50 years since the species was discovered, there have been just 273 sightings, most involving sharks caught in fishing gear. The video contains the only knowledge we have on megamouth shark sociality, according to a new study analyzing the footage.