Matthew David Kaplan on Instagram: "The most amazing encounter — one of the ocean’s most elusive predators, the pelagic thresher shark, glides straight toward us before veering off over the reef. Thresher sharks are deep-sea hunters, typically found at depths of 150 to 500 meters. Yet here in Malapascua, they rise from the depths to visit Kimud Shoal, a cleaning station uniquely positioned near deep water. This allows them to rid themselves of parasites before disappearing once more into the aby