| Family: |
Lamnidae (Mackerel sharks or white shark) |
| Max. size: |
640 cm TL (male/unsexed); max.weight: 3,230 kg; max. reported age: 36 years |
| Environment: |
pelagic-oceanic; brackish; marine; depth range 0 - 1200 m, oceanodromous |
| Distribution: |
Worldwide. Very wide-ranging in most oceans; among the greatest habitat and geographic range of any fish, tolerating temperatures of 5°-25°C. |
| Diagnosis: |
Dorsal spines (total): 0-0; Dorsal soft rays (total): 0-0; Anal spines: 0-0; Anal soft rays: 0-0. A huge, spindle-shaped shark with conspicuous black eyes, a blunt, conical snout and large, triangular, saw-edged teeth (Ref. 5578). First dorsal-fin origin usually over the pectoral-fin inner margins (Ref. 43278, 6871). Caudal fin crescentic (Ref. 247). Lead-grey to brown or black above, lighter on sides, and abruptly white below (Ref. 6851). Black spot at rear pectoral fin base (Ref. 6851). |
| Biology: |
Primarily a coastal and offshore inhabitant of continental and insular shelves, but may also occur off oceanic islands far from land (Ref. 247, 43278, 58302). Often close inshore to the surf line and even penetrates shallow bays (Ref. 247). Maximum depth of 700 fathoms (or 1280 m) reported by Bigelow & Schroeder, 1948 is erroneous (Francis et al., 2012 in Ref. 106604). Pelagic, capable of migration across oceanic regions (Ref. 58302). Usually solitary or in pairs but can be found in feeding aggregations of 10 or more; does not form schools (Ref. 247). Feeds on bony fishes, sharks, rays, seals, dolphins and porpoises, sea birds, carrion, squid, octopi and crabs (Ref. 5578) and whales (Ref. 32140). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 43278, 50449). Number of young born per litter, 7 (Ref. 31395) to 14 (Ref. 26346). Reported by some experts to attack humans which they mistake for their normal prey (Ref. 47). Most attacks occur in estuaries. Caught by big-game anglers and line boats for its jaws (Ref. 5578). Reported to cause poisoning (Ref. 4690). Flesh is utilized fresh, dried-salted, and smoked for human consumption, the skin for leather, liver for oil, carcass for fishmeal, fins for shark-fin soup, and teeth and jaws for decorations (Ref. 13574). Maximum total length is leading to much speculation and some measurements are found to be doubtful. Possibly to 6.4 m or more in length (Ref. 43278), considered the world's largest predator with a broad prey spectrum. The record of 10.98 m is incorrect (Ref. 13574). Maximum total length for male from Ref. 91029. Sometimes considered the most dangerous shark in the world (Ref. 26938). |
| IUCN Red List Status: |
Vulnerable (VU); Date assessed: 07 November 2018 (A2bd) Ref. (130435)
|
| Threat to humans: |
traumatogenic |
| Country info: |
Occurs in Mindanao and Palawan (Ref. 43278). Found no other Philippine records following those reported in Herre (1953, Ref. 280), but is expected to occur in the area (Ref. 47737). Also Ref. 247, 13574, 110893. |
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