Not all heroes wear capes. Sometimes they wear diving gear.
Huffington Post reported that, on a recent dive, scuba instructor Inaki Aizpun came upon a gray nurse shark (also known as a sand tiger shark).
It had a fishing net and rope lodged in its mouth.
While most people would want to stay far away from those sharp teeth, Aizpun put his fear aside in order to help the shark.
He swam closer and gently tugged on the rope to free the shark.
In his video, he said he felt that the shark almost seemed to want to co-operate, and Aizpun was able to get it untangled.
According to the Florida Museum, sand tiger sharks are not usually aggressive unless they are provoked. But inaccurate fear-mongering surrounding sharks could have stopped someone from attempting this rescue.
Fortunately the diver braved the situation, and both shark and human left the scenario just fine. Now Aizpun is hoping his video will raise awareness about the issue with discarded plastic netting in the sea (which is just a fraction of the total pollution problem in the ocean).
"Fishing nets are killing the diverse marine life in the oceans," he wrote alongside his Facebook video. "[Trash] is confusing many marine species and is killing them. The animals are the forgotten ones," he added in an interview with Lavanguardia.
Discarded fishing gear entangles all kinds of animals, from sharks and dolphins to whales, turtles and more.
A study conducted by World Animal Protection found that 640,000 tons of fishing equipment gets left behind in the ocean every year.
And if animals aren't drowned at first entanglement, they can end up dragging around gear which may impact their ability to swim and feed.
Having a net caught in its mouth could have contributed to this shark's eventual starvation.
Fortunately Aizpun was there to help. And he wants people viewing his video to see that sharks aren't killing machines, and that this one was very calm while he tried to help it.
"Sharks are not aggressive; they only attack by accident. We are not part of their menu. ... My advice is that divers do not think about fear, [but] that they think about love and then the shark does not attack you," he told Lavanguardia.