Dolphin at play
Dusky dolphins (Lagenorhynchus obscurus) are slightly smaller than common dolphins at 1.6–2.1 metres long and 50–90 kilograms in weight. They have tapered diagonal stripes along their side. Their main foods are krill, copepods and small fish. The average size of pods is 6–15, but groupings of several hundred or even thousands are often seen. Original public domain image from Flickr