Short-beaked Common Dolphin surfacing to breathe while travelling at speed. The short-beaked common dolphin (Delphinus delphis) is probably the most abundant dolphin in the world. It is the most common dolphin in the warm-temperate zones of the Atlantic and Pacific Oceans and is also found in the Caribbean and Mediterranean Seas. Adults range between 1.6 and 2 metres (5.2 and 6.6 ft), long, and can weigh between 70 and 235 kilograms (150 and 520 lb). Most of the dolphins depicted in ancient Gree