Discover the joys and trials of underwater life with aquar.io! Start off as a tiny fish, scavenge the bottom of the ocean for food, complete missions and fight other players to gain coins and increase in size. Each fish has a set of characteristics, as well as active and passive skills. Some of them can become invisible, others are capable of accelerating to run away from danger and some can even divide their body into several parts! Once your fish gets big enough, you can start hunting down other sea dwellers. Beware of fishes that are larger than you and keep away from treacherous thorns!