Some 360 million years ago, the oceans were teeming with big fish, some as big as a school bus.
Then something terrible happened, the causes of which still escape scientists today: the Hangenberg Event.
Gone are the days of having to scream over music in a nightclub, like a sweaty lunatic, to try and chat to a girl - you can just swipe right.
However, while some people seem to smash it on dating apps, others struggle to find any decent matches.
While it is free to use, Plenty Of Fish offers premium services as part of their upgraded membership, such as who has "liked" a member through the service's Tinder-like Meet Me feature, and allowing users to see whether a message has been read and/or deleted.