Short-beaked Common Dolphin (Delphinus Delphis) juvenile Azores

Atlantic spotted dolphin porpoising (Stenella frontalis) Azores, Atlantic Ocean

Short-Beaked Common Dolphin, Delphinus delphis, leaping at the surface off the Azores Islands, showing foetal folds

Short-Beaked Common Dolphin, Delphinus delphis, mother and calf leaping together off the Azores Islands

Short beaked common dolphin (Delphinus delphis) surfacing, Gran Canaria, Canary Islands, Atlantic Ocean

Pod of Common dolphins surfacing (Delphinus delphis) off Angola, West Africa

Short-beaked Common dolphins (Delphinus delphis) Gibraltar, Mediterranean

Short-beaked Common Dolphin (Delphinus delphis) on guided marine tour. Pembrokeshire, Wales, UK

Short-beaked Common Dolphin (Delphinus delphis) Pembrokeshire, Wales, UK

Short-beaked Common Dolphin (Delphinus delphis) bow riding. Pembrokeshire, Wales, UK

Short-beaked Common Dolphin (Delphinus delphis) Pembrokeshire, Wales, UK

Short-beaked Common Dolphin (Delphinus delphis) leaping offshore in Santa Monica Bay, Southern California, USA. Pacific Ocean.

Short-beaked Common Dolphins (Delphinus delphis) Group leaping Peruvian waters

Common Dolphins (Delphinus delphis). A large group travelling in Gulf of California.

Scientist lying on 10ft long bowsprit of research yacht, Silurian, to photo-identify common dolphins. Hebrides, Scotland.

Adult Common Dolphins (Delphinus delphis) leaping in the upper Gulf of California (Sea of Cortez), Mexico.

Common dolphins porpoising (Delphinus delphis) Azores, Atlantic Ocean