51.2 MB (2.9 MB compressed)
5249 x 3407 pixels
44.5 x 29.0 cm ⏐ 17.5 x 11.4 in (300dpi)
FRED MCCONNAUGHEY / SCIENCE PHOTO LIBRARY FRED MCCONNAUGHEY / SCIENCE PHOTO LIBRARY
Blue shark. The blue shark (Prionace glauca) is found throughout the world apart from in colder waters. It tends to follow huge shoals of fish such as tuna and mackerel, its main prey. It also feeds on other sharks, squid and mammals such as dolphins. It has been known to attack humans, although it rarely ventures into coastal waters. It is a sleek, fast-swimming and powerful shark, and may reach up to four metres in length. Photographed 50 kilometres off San Diego, California, USA.
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