"I pull them on shore, I photograph them, and then I let them go, I'm pretty conservation minded, I'm not trying to eat them or hurt them," Sudal told National Geographic.

The 24-year-old is originally from Burlington, Connecticut, but he recently moved to Massachusetts' Nantucket Island. Before that, he lived in Florida, where he was also an avid surf fisherman.

Sudal said he has caught-and-released a hundred sharks over the past eight months, the majority of them in Florida. "They have a lot more sharks down there than in Nantucket," he said.