When it comes to biodiversity, it is no great secret that many species on planet Earth are facing extinction. Indeed, since the dawn of time, there have been species that are endangered, and with all the harm that humans are causing the planet, the situation is only getting worse.
What recently took scientists by surprise, however, is just how quickly things are getting worse in the case of freshwater animals. According to a recent study, nearly a quarter of the species that live in freshwater face the imminent risk of becoming extinct.
Curious? Check out this gallery to find out more.