The porbeagle is a species of mackerel shark in the family Lamnidae, distributed widely in the cold and temperate marine waters of the North Atlantic and Southern Hemisphere. The porbeagle typically reaches 2.5 m (8.2 ft) in length and a weight of 135 kg (300 lb). Gray above and white below, the porbeagle has a very stout midsection that tapers towards the long, pointed snout and the narrow base of the tail. It has large pectoral and first dorsal fins, tiny pelvic, second dorsal, and anal fins, and a crescent-shaped caudal fin. The most distinctive features of this species are its three-cusped teeth, the white blotch on the back of its first dorsal fin, and the two pairs of lateral keels on its tail. Preying mainly on bony fishes and cephalopods, the porbeagle is an opportunistic hunter that regularly moves up and down in the water column, catching prey in midwater as well as off the bottom. It is well regarded as a game fish by recreational anglers. The porbeagle's meat and fins are highly valued, which has led to a long history of intense human exploitation. However, this species cannot sustain heavy fishing pressure because of its low reproductive capacity.
Read more: https://en.wikipedia.org/wiki/Porbeagle
_______________________________ Today's selected anniversaries:
1707:
The Hōei earthquake ruptured all of the segments of the Nankai megathrust simultaneously—the only earthquake known to have done this—with an estimated magnitude of 8.6 ML. https://en.wikipedia.org/wiki/1707_H%C5%8Dei_earthquake
1835:
Māori chiefs signed the Declaration of the Independence of New Zealand and established the United Tribes of New Zealand. https://en.wikipedia.org/wiki/United_Tribes_of_New_Zealand
1918:
Czechoslovakia proclaimed its independence from Austria- Hungary. https://en.wikipedia.org/wiki/Czechoslovakia
1965:
In St. Louis, Missouri, US, the 630-foot (190 m) tall parabolic steel Gateway Arch was completed. https://en.wikipedia.org/wiki/Gateway_Arch
1971:
Prospero, the only British satellite to date launched on a British rocket, lifted off from Launch Area 5B at Woomera, South Australia. https://en.wikipedia.org/wiki/Prospero_(satellite)
_____________________________ Wiktionary's word of the day:
mulct: (law) A fine or penalty, especially a pecuniary one. https://en.wiktionary.org/wiki/mulct
___________________________ Wikiquote quote of the day:
Neither wisdom nor good will is now dominant. Hope lies in dreams, in imagination and in the courage of those who dare to make dreams into reality. --Jonas Salk https://en.wikiquote.org/wiki/Jonas_Salk
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