The Albuquerque Aquarium takes visitors on a journey down the Rio Grande from Albuquerque to its mouth in the Gulf of Mexico. Fresh water riverine, estuarine, surf zone, shallow waters, coral reefs, open ocean and deep ocean species are represented along the way. Other highlights include an eel tunnel, seahorses, luminous jellies and a 285,000 gallon ocean tank where brown, sandtiger, blacktip and nurse sharks swim alongside brilliantly colored reef fish, eels, sea turtles and open ocean species. The Albuquerque Aquarium is a facility of the Albuquerque Biological Park.