Stingrays are a group of rays, which are cartilaginous fishes related to sharks. Most stingrays have one or more barbed stingers (modified from dermal denticles) on the tail, which are used exclusively in self-defense.

Stingrays are ovoviviparous, bearing live young in “litters” of five to 13. The female holds the embryos in the womb without a placenta. Instead, the embryos absorb nutrients from a yolk sac, and after the sac is depleted, the mother provides uterine “milk”.

Stingrays are among several species that are able to store sperm for years, not completing the conception until circumstances are appropriate.

The video above was taken after the stingray was caught by a fisherman.

Via on YouTube.
Quoted text via Wikipedia.