Scuba diver Hiroyuki Arakawa and Yoriko are the unlikeliest of friends. While they both share a love for the sea, Yoriko’s gills and tail make her a little more aquatically inclined. Nearly every day for the past 25 years, Arakawa has been diving into the waters of Hasama Underwater Park in Tateyama, Japan, to visit Yoriko—an Asian sheepshead wrasse. One day, Arakawa found her looking exhausted and carrying an injury. So he did what any friend would do: he took care of Yoriko, feeding her crabs and nursing her back to health. Their decades-long friendship is proof there’s no greater bond than the one between man and fish.