fish

Fish were here long before we were, and they have evolved an extraordinary range of solutions to problems we humans only recently noticed exist. Our fish section covers anatomy, the fish circulatory system, gills and how breathing underwater actually works, vision and intelligence, the oddly sophisticated courtship rituals you would never expect from a creature that looks back at you with one eye at a time, and the long, strange evolutionary path from the first agnathans to the cuttlefish in your local tide pool. (Yes, the cuttlefish is a mollusc — but the line between fish and not-fish gets blurrier the further back you go.)

Fish were here long before we were, and they have evolved an extraordinary range of solutions to problems we humans only recently noticed exist. Our fish section covers anatomy, the fish circulatory system, gills and how breathing underwater actually works, vision and intelligence, the oddly sophisticated courtship rituals you would never expect from a creature that looks back at you with one eye at a time, and the long, strange evolutionary path from the first agnathans to the cuttlefish in your local tide pool. (Yes, the cuttlefish is a mollusc — but the line between fish and not-fish gets blurrier the further back you go.)