Dingle's aquarium is a lot of fun, and includes a walk-through tunnel and a touch pool. Psychedelic fish glide through tanks that recreate such environments as Lake Malawi, the River Congo and the piranha-filled Amazon. Reef sharks and stingrays cruise the shark tank; water pumped from the harbour fills the Ocean Tunnel tank where you can spot native Irish species such as dogfish, mullet, plaice, conger eels and the spectacularly ugly wreckfish.