Search results
Results From The WOW.Com Content Network
Dorsal fins also exhibit sexual dimorphism, with those of males about 1.8 m (5 ft 11 in) high, more than twice the size of the female's, with the male's fin more like an elongated isosceles triangle, whereas the female's is more curved. [41]
Port and Starboard are a pair of adult male orcas notable for preying on great white sharks off the coast of South Africa. [1] The duo are identified as having rare and distinct collapsed dorsal fins and they are named for the nautical terms, as Port's fin collapses left and Starboard's collapses right. [2]
Female residents characteristically have rounded dorsal fin tips that terminate in a sharp corner. [8] The grey or white area around the dorsal fin, known as the "saddle patch", often contains some black colouring in residents. They visit the same areas consistently.
The shape, size, position and colour of the dorsal fin varies with the type of billfish, and can be a simple way to identify a billfish species. For example, the white marlin has a dorsal fin with a curved front edge and is covered with black spots. [4] The huge dorsal fin, or sail, of the sailfish is kept retracted most of the time. Sailfish ...
After exposure to the 1989 Exxon Valdez oil spill, two male resident killer whales experienced dorsal fin collapse, and the animals subsequently died. In 2002, the dorsal fin of a stranded killer whale showed signs of collapse after three days but regained its natural upright appearance as soon as the orca resumed strong normal swimming upon ...
According to biologists, the dorsal fin’s size in such shallow water should reveal part of the shark’s back or a second dorsal fin — neither of which are visible.
For premium support please call: 800-290-4726 more ways to reach us
Sumar was approaching full size for a typical bull orca when he died: his dorsal fin was more and more leaning to its left and his flukes were beginning to curl under. He was about 4.6 m (17 feet) long and weighed around 5,300 pounds (2,400 kg). He was often used for shows in the park. [152]