A blacktip reef shark cruising solo at the border between the backreef and forereef, where we see the waves breaking in the background. A few sharks had cameras attached, as well as the accelerometers. However, even with cameras it's hard to know everything the shark is doing! Acceleration data provides a picture of what the shark is doing without having to spend all day underwater swimming after it. (© Yannis P Papastamatiou)

A blacktip reef shark cruising solo at the border between the backreef and forereef, where we see the waves breaking in the background. A few sharks had cameras attached, as well as the accelerometers. However, even with cameras it’s hard to know everything the shark is doing! Acceleration data provides a picture of what the shark is doing without having to spend all day underwater swimming after it. (© Yannis P Papastamatiou)