Remains of large shortfin mako shark found in eastern Nova Scotia

A rare discovery was made on Nova Scotia’s Eastern Shore by a marine animal rescue group. The Halifax-based Marine Animal Response Society confirmed the finding of the remains of a large shortfin mako shark near Port Dufferin, N.S. The shark, which was a 3.6-metre adult female, is considered the fastest shark in the ocean.

Executive director Tonya Wimmer stated that it is still unknown how the shark died as it was too decomposed to conduct a necropsy. The shark was found in poor condition, indicating that it had been there for a few days. There were no external clues to explain why it was in that location.

Shortfin makos are typically found offshore in warmer waters like the Gulf Stream, making it unusual to find one so close to shore. However, Wimmer mentioned that it has happened before, although it is rare.

These sharks can grow up to 3.9 metres in length and reach speeds of up to 68 kilometres per hour, according to the federal Fisheries Department. They are known for their aerial displays, jumping as high as six metres above the water. Makos frequent Browns Bank off southwestern Nova Scotia and the Gulf of St. Lawrence, swimming as far south as Argentina.

The Fisheries Department describes makos as having slender, curved teeth that are visible even when their mouths are closed, giving them a fearsome appearance. They have white undersides and metallic indigo blue topsides.

Makos primarily feed on squid, mackerel, tuna, bonitos, and swordfish, but they may also prey on other sharks and porpoises. Their elusive nature makes them rarely encountered by swimmers or divers. The mako population is endangered, primarily due to threats from longline fisheries targeting other fish species.

Shark sightings have been increasing along Canada’s East Coast in recent years, with great white sharks receiving the most attention. Conservation efforts have helped the great white shark population recover, while climate change has led to warmer ocean temperatures, allowing many species to move northward.

Experts are still determining the impact of climate change on makos. In the past, there have been instances of makos being caught in Nova Scotia waters, but they are typically found in waters warmer than 16 degrees Celsius.

The discovery of the shortfin mako shark serves as a reminder of the importance of marine conservation efforts and the need to protect these magnificent creatures.