SOUTHERN STINGRAY

     The name Stingray refers to several species of the family dasyatidae, recognizable by a tail shaped like a whip. The American stingray (dasyatis americana) is one of these species and is found on the west coast of the Atlantic Ocean, from New Jersey to the south of Brazil, including the Gulf of Mexico and the West Indies. Very common in the Caribbean, it is less present in the Bahamas and Florida.

     Although having a longer tail length and an almost uniformly gray color and not yellow, this species is very close to the yellow stingray which I already presented to you on this site, here for the Bahamas and there for eastern Florida. We know that all species of dasyatidae (except one) have one or more poisonous stings on the tail, erect upward, used for defense against predators. This thorn is furnished with points directed towards its base, like a harpoon. The stingray has only one. Its venom is very dangerous, even fatal, including for humans. Contact, in general, occurs when a swimmer or diver accidentally walks over a stingray seated on the bottom. The injury is very painful and variable side effects quickly appear: cramps, nausea, vomiting, diarrhea ... A first fatal case occurred in 2006: that of Steve Irwin, an Australian owner of a zoo and famous presenter of documentaries about animals broadcast on television, touched in the chest during a dive. For more details on a second recent fatal accident (end of 2018) and on how to deal with this kind of accident, see the 2 links here and there .

Southern stingray and jack


     The photo opposite comes from this site and is a good illustration of the following behavior, very often observed, namely that of a jack moving in concert with a southern stingray, the first right on the top of the second.

     The video below that you may watch and that I have shot in Cozumel (Mexico) in June 2016, is not only a testimony of this very particular behavior, but also of the differences in physical appearance between yellow stingray and american stingray .

     Divers have always wondered who was following who and it is now recognized that, in addition to the protection provided by the proximity of a large fish like the stingray, the rather young jacks "surf" literally on the wave created by the advancing "big one". This is a type of natural biological interaction between two living creatures in which one provides part of its own energy to the other, an interaction similar to some form of commensalism.
To know more ...
You may also click on the two following links :
   the link 1 in French,
  or the link 2 in French and in English.