The current are strong which makes this a challenging drift dive, but the turtles and other marine life you will see is a nice reward.
More information on divesitedirectory.com http://www.divesitedirectory.com/dive_site_caribbean_tobago_reef_black_jack_hole.html
Address Trinidad & Tobago
Coordinates 11°17'37.298" N -60°29'52.645" E