Water sports have been recreationally and competitively the traditional sports of Adana. Water polo team of Adana Demirspor is a legend in the community, joining the Turkish Waterpolo League in 1942 after the first modern water sport venue of Turkey, Atatürk Swimming Complex, opened in Adana in 1936. The team has a record 22 years of straight championship title in Turkish Men's Waterpolo League, 17 years of it without losing a game and thus their given name ""Unbeatables"". Demirspor has a total of 29 championship titles. Rowing became a popular sport in Adana in the last 20 years. Rowing competitions are held all year long on Seyhan River and Seyhan Reservoir. Metropolitan Rowing Club and Çukurova University SK compete at national and international level. Sailing competitions are also held at Seyhan Reservoir all year long. Adana Sailing Club performs at sailing competitions in different categories. In swimming, Erdal Acet of Adana Demirspor is a prominent figure in Adana, who broke the record of swimming Canal La Manche (English Channel) in 9 hours and 2 minutes in 1976. Recreationally, the lack of swimming pools made Seyhan River and the irrigation canals attractive for swimmers who want to cool off from the hot and humid summers. Due to almost 100 people suffocating every year, the Metropolitan Municipality built and opened 41 swimming pools over the last 15 years.