Resources

Other Links:

Book: From Fish Gills To Underwater Breathing

Boys’ Life – Google Books

Deeper Blue

Defense Review

Dive South Africa

Impressive Magazine

Lifeboat Foundation

Mind-blowing Facts

Society 6 Poster

Technovelgy

Unexplained Mysteries

Vogue

WCO (Wallace and Gromit, from 21:45)

Wikipedia  (Artificial Gills)