"Common dolphins working a bait ball. These fast and graceful animals work as a team to herd the sardines (Sardinops ocellatus) into a tight ball, driving them toward the surface. The dolphins appear to use a combination of bubbles and sounds to achieve this. The dolphins are very vocal during this operation. I could clearly hear both communication and sonar sounds building up to a crescendo as they repeatedly smashed into the fish."
Charles Maxwell

Charles Maxwell is an underwater cinematographer based in Cape Town, South Africa. A keen diver and lover of the marine environment for 35 years, Maxwell has made documentaries for the National Geographic Society and the BBC. He runs his own business, Underwater Video Services.

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