Alexander Wilcox, a British marine biologist, has been working alongside “shark whisperer” and conservationist Cristina Zenato recently. In this video by DiveCareDare, he is seen showing his skills to other divers in waters off the Bahamas.

Tony Isaacson of DiveCareDare accompanied Wilcox and the other divers, who got to pet a reef shark after it had been rendered motionless by Wilcox. Credit: Tony Isaacson via Storyful