What is biggest aquarium in istanbul?

The biggest aquarium in Istanbul is called "Istanbul Akvaryum". It covers an area of 12,000 square meters and houses over 15,000 sea creatures from more than 150 species. One of the main attractions of this aquarium is the chance to walk through a 168-meter-long underwater tunnel while watching sharks, stingrays and other marine life swimming above and around you. Istanbul Akvaryum also offers interactive exhibits, a 5D cinema, and daily shows including feeding and diving demonstrations. It is located in the Florya district of Istanbul and is easily accessible by public transportation.