水生 (すいせい)aquatic (life); living in the water

aquatic (life); living in the waternouns which may take the genitive case particle 'no', noun (common) (futsuumeishi)

水生, its kanji, and other words that share them.Open this graph

Kanji in 水生

水みずwater (esp. cool, fresh water, e.g. drinking water)
水準すいじゅんlevel; standard
水道すいどうwater supply; water service
水面すいめんwater's surface
水俣病みなまたびょうMinamata disease
水泳すいえいswimming
水田すいでん(water-filled) paddy field
水産すいさんaquatic products; fisheries
学生がくせいstudent (esp. a university student)
生活せいかつliving; life (one's daily existence)
生産せいさんproduction; manufacture
人生じんせい(human) life (i.e. conception to death)
先生せんせいteacher; instructor
厚生省こうせいしょうMinistry of Health and Welfare (now Ministry of Health, Labour and Welfare)
年生ねんせいpupil in ... year; student in ... year
新生しんせいrebirth; new birth

See how 水生 connects to the rest of Japanese.