The Joint Services Shark Tagging Team (JSSTT) 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 nicknamed EXERCISE JURASSIC SHARK.  They are open to military and essential scientific personnel only. The team represents PRETOMA (a Costa Rican NGO specialising in shark and turtle conservation) in the UK and is sponsored by Selex Galileo.

The JSSTT has now tagged 35 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.  The first expedition, EXERCISE JURASSIC SHARK, tagged 15 hammerhead sharks off Cocos Island, Costa Rica in July 2006. The second expedition, EXERCISE JURASSIC SHARK 2, took place in October 2008 and tagged a further 20 sharks (including 10 great white sharks) off Guadalupe and the Revillagigedo Islands (Mexico).

EXERCISE JURASSIC SHARK 3 is being planned for July 2010 (subject to boat availability).  The aim of this expedition will be to produce a documentary about shark research and conservation in Costa Rica.  The expedition will be carried out in partnership with the PRETOMA.  Military personnel wanting to join this expedition should be aware that places will be limited and that re-breather use will be a key aspect of this expedition.  Applications will only be accepted once a boat has been booked.