Came across a Wired article about freediving yesterday that features the photography of Logan Mock-Bunting. Logan was in the Bahamas late last year to document the 2014 Vertical Blue freediving competition. He captured the ups and downs (literally and figuratively) of the participants - from the celebrations to the black outs.
Shallow water black-out. Image by: Logan Mock-Bunting
Be sure to check out his work at www.loganmb.com.