About the Aquarium If you are looking for things to do in Achill then our aquarium should be at the top of your list as the Aquarium consists of 16 tanks, exhibiting a variety of fish that can be found in waters off Achill which is on the Wild Atlantic Way. We also house a selection of tropical fish from around the world. Our open top tank allows you to get a better look at catsharks, crabs, thornback rays, starfish, sea urchins and various species of flat fish. Clown Fish “Nemo” Pacific Blue Tang “Dory” We have Clown fish “Nemo” and Pacific Blue Tang “Dory” and an octopus called “Ollie”. Our history boards detail the history of the Shark Fishing industry in Achill during the 1950’s which during that time was one of the largest fisheries in the world.