The Joint Services Shark Tagging Team is a Tri-Service team of divers from the British Armed Forces.  The team exists to provide manpower and resources for shark tagging and other marine conservation projects where diving skills are required. JSSTT expeditions operate under the Joint Services Adventurous Training scheme and are open to military and essential scientific personnel only. The team represents ‘Programa Restauracion de Tortugas Marinas’ (PRETOMA), a Costa Rican NGO specialising in shark and turtle conservation) in the UK.

The JSSTT has now tagged 50 sharks and placed 6 acoustic receivers in the Eastern Pacific with the aim of building an overall picture of shark movements in the across the Eastern Pacific Tropical Seascape and beyond.