Stingray
Stingrays are a type of cartilaginous fish (meaning their skeletons are made of cartilage, not bone), like their relatives, the sharks. They have large pectoral fins that run most of the length of their entire body, giving their bodies a disc or diamond shaped appearance. They have long, whip-like tails armed with a barbed stinger that can deliver a venomous sting to any creatures that threaten the stingray. There are currently around 220 known species.
Class: Chondrichthyes
Order: Myliobatiformes
Suborder: Myliobatoidei
Family: Dasyatidae
Genus: Dasyatis
Species: D. pastinaca
Common Names: Common Stingray
Stingrays bury themselves in sand and forage for food on the seafloor. They eat various animals including crustaceans, small fishes, shellfish and cephalopods (such as squids).
Stingrays are not usually aggressive, but due to their behavior of concealing themselves in sandy sea beds, they present a hazard to humans when encountered near shore. If stepped on, they will whip their tail upward and use their stinger to cause a painful, venomous wound in their intended target.
Female stingrays incubate their eggs within their bodies until ready to hatch, at which point they give birth to between 4 and 9 pups at a time. They gestate for four months, and usually bear two litters per year.
Stingrays are known to gather in large numbers in summer in specific locations, and scientists assume these gatherings facilitate breeding.
The common stingray is a fairly typical example of the stingray form. Its body can reach a width of about four and a half feet, and it can grow to eight feet long, including its tail. Like most stingrays, it has a flattened, diamond shaped body. Its coloration is a mottled brownish above and white below. Its eyes are located on the top of its head, while its mouth and gills are found on its underside. Behind its eyes are structures called spiracles, which help the stingray to breathe.
The common stingray was known to the Ancient Greeks, who called it “trygon”. The Ancient Roman naturalist Pliny the Elder believed that its spine could pierce armor, and that stingray wounds were incurable. This is, of course, not true, and while the sting is very painful, deaths from stingray stings are very rare.
Ancient Greeks also believed stingrays had tremendous power, with Oppian the poet believing that their stinger venom could melt stone, and it is even said that the Greek hero Hercules lost a finger to a stingray.
Today, many species are involved with ecotourism, as they are known to congregate in certain areas where they are very docile and can even be hand-fed. However, even these seemingly tame stingrays should be treated with respect as they can still defend themselves with a dangerous sting.
The common stingray is currently listed as “Data Deficient” by the International Union for the Conservation of Nature, meaning there is not enough information to determine if it is in need of immediate protection.
However, it is listed as Near Threatened in certain locales, including the Mediterranean Sea. It is sometimes caught accidentally by fishing nets meant for other species.