Whitetip shark

The whitetip reef shark (Triaenodon obesus) is a species of requiem shark, family Carcharhinidae. A small shark usually not exceeding 1.6 m (5.2 ft) in length, this species is easily recognizable by its slender body and short but broad head, as well as tubular skin flaps beside the nostrils, oval eyes with vertical pupils, and white-tipped dorsal and caudal fins. One of the most common sharks found on Indo-Pacific coral reefs, the whitetip reef shark occurs as far west as South Africa and as far east as Central America. It is typically found on or near the bottom in clear water, at a depth of 8–40 m (26–130 ft). During the day, whitetip reef sharks spend much of their time resting inside caves or sandy bottoms. Unlike other requiem sharks, which rely on ram ventilation and must constantly swim to breathe, this shark can pump water over its gills and lie still on the bottom. At night, whitetip reef sharks emerge to hunt bony fishes, crustaceans, and octopus in groups, their elongate bodies allowing them to force their way into crevices and holes to extract hidden prey. Individuals may stay within a particular area of the reef for months to years, time and again returning to the same shelter. This species is viviparous, in which the developing embryos are sustained by a placental connection to their mother. One of the few sharks in which mating has been observed in the wild, receptive female whitetip reef sharks are followed by prospective males, which attempt to grasp her pectoral fin and manoeuvre the two of them into positions suitable for copulation. Females give birth to one to six pups every other year, after a gestation period of 10–13 months. Whitetip reef sharks are rarely aggressive towards humans, though they may investigate swimmers closely.
EXIF data
  • Taken on 2012-08-12 22:00:57
  • Camera model: Canon PowerShot G10
  • Focal Length: 18.098 mm
  • Aperture: f 5.6
  • Exposure Time: 1/50 sec
  • ISO 100
  • Flash?: Unknown
Categories
Rate the photo
  • Currently 2.50/5>
  • 1
  • 2
  • 3
  • 4
  • 5
Rating: 2.5/5 (112 votes cast)
Developed by David Comas on Pixelpost - Based on Rasul's template