diving

diving /ˈdaɪvɪŋ/ noun
diving
/ˈdaɪvɪŋ/
noun
Britannica Dictionary definition of DIVING
[noncount]
1 
: a sport or activity in which people dive into water from a diving board or a platform
2 
: a sport or activity in which people swim underwater while using special equipment to breathe
— often used before another noun — see also scuba diving