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A stingray's barb (ruler in mm). The barb is covered with rows of flat spines, composed of vasodentin. Vasodentin is an incredibly strong cartilaginous material which can easily cut through flesh. The undersides of the spines contain two longitudinal grooves which run along the length of the spine and enclose venom-secreting cells.
The blade is often deeply barbed and usually breaks off in the wound. Surgery may be required to remove the fragments. [36] Fatal stings are very rare. [34] The death of Steve Irwin in 2006 was only the second recorded in Australian waters since 1945. [37] The stinger penetrated his thoracic wall and pierced his heart, causing massive trauma ...
One of the smallest stingray species, the Atlantic stingray attains a maximum length of 61 cm (24 in) and a weight of 4.9 kg (11 lb). [4] It has a spade-shaped pectoral fin disk 1.1 times as wide as long, with rounded corners and concave anterior margins. The snout is relatively long.
Deaths from stingray venom are rare, but the most notable example is “Crocodile Hunter” Steve Irwin, who died after a short-tailed stringray’s barb pierced his heart in 2006.
The round stingray (Urobatis halleri) or Haller's round ray and Little round stingray is a species of round ray, family Urotrygonidae, found in the coastal waters of the tropical and subtropical parts of the northeastern Pacific Ocean. It is a small, common ray that feeds mostly on benthic invertebrates.
In order to sting their victims, they jerk their tails as the stinger falls off and stays in the wound that they have created. The stinger of a whiptail stingray is pointy, sharp with jagged edges. They range in size from 0.18 to 2.0 m (0.59 to 6.56 ft) or more across in the case of the smalleye stingray and giant freshwater stingray .
The short-tail stingray or smooth stingray (Bathytoshia brevicaudata) is a common species of stingray in the family Dasyatidae. It occurs off southern Africa , typically offshore at a depth of 180–480 m (590–1,570 ft), and off southern Australia and New Zealand , from the intertidal zone to a depth of 156 m (512 ft).
The common stingray has a plain coloration and mostly smooth skin. The common stingray has been reported to reach a width of 1.4 m (4.6 ft) and a length of 2.5 m (8.2 ft), though a width of 45 cm (18 in) is more typical. [8] The flattened pectoral fin disc is diamond-shaped and slightly wider than it is long, with narrowly rounded outer corners ...
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