Stingrays have no bones in their body. Instead, their skeleton is made up of flexible cartilage — the bendy stuff that your ears and nose are made from.
Stingrays use their sense of smell and electroreceptors — special pores around their faces that can detect electrical currents — to find food.
Stingrays and sharks actually have a lot in common. Their bodies are both made up of cartilage, and they have the same type of teeth. They both have scales that cover their bodies called dermal denticles.
Despite being related, stingrays need to keep an eye out for sharks, as a visit from one can be deadly. Other common predators include large fish and seals.
Stingrays are "ovoviviparous," which means they give birth to fully formed offspring rather than laying eggs. Female stingrays give birth up to twice a year.
Female stingrays are larger than males, and they also tend to live longer — some can live for up to 22 years, whereas males tend to live for about seven.
Stingrays existed at the same time as the dinosaurs. Evidence has been found of a stingray fossil that dates back over 50 million years.