IPA: /əˈkwætɪks/
KK: /əˈkwætɪks/
Activities or sports that take place in water, such as swimming, diving, and water polo.
The summer camp offers various aquatics programs for children.
Aquatics is formed from "aqua" (from Latin, meaning water) and the suffix "-ics" (meaning related to or pertaining to). The word refers to activities or things related to water.
Think of 'aqua' meaning water, and remember that 'aquatics' refers to things related to water activities.