Full legal protection granted to the common thresher shark

They are found in Manx waters during the summer months

The Isle of Man Government has granted full legal protection to the common thresher shark, making it an offence to deliberately catch, harm or kill the species in Manx waters.

It comes after they were added to Schedule 5 of the Wildlife Act 1990 following inclusion on Appendix I of the Convention on Migratory Species (CMS) in March 2026, an international treaty that protects migratory wildlife and their habitats across the globe.

The Isle of Man is subject to this convention.

Thresher sharks, which can grow up to six metres long, have been recorded feeding on fish, including herring and mackerel, in Manx waters during the summer months.

Their elongated tail fin, which can be as long as their own body, making them instantly recognisable.

Listed as Vulnerable on the International Union for the Conservation of Nature (IUCN) Red List, the common thresher shark (Alopias vulpinus) faces significant pressures around the world from accidental capture during fishing operations and international trade.

The Isle of Man has no commercial shark fishery, and any sharks accidentally caught are returned to the sea, reflecting the Manx fishing industry's existing commitment to sustainable practices.

Clare Barber MHK, Minister for Environment, Food and Agriculture, said: "The thresher shark is a remarkable species, and I'm pleased that the Isle of Man is playing its part in securing its future. This protection reflects both our international responsibilities and the genuine commitment our fishing industry already shows to sustainable, responsible practice.

She added: “The Isle of Man's waters are an important habitat for migratory marine species, and we are determined to protect them."

The new legislation came into effect on Saturday 27 June.