I research aquatic organisms.
Many aquatic plants grow in this pond.
aquatic animal; aquatic fauna
aquatic insect
aquatic plant
aquatic life; water creatures
Standard kanji spelling for aquatic life; common in news and general use.
Alternate spelling using 棲 (dwelling), emphasizing the habitat aspect. Less common than 水生.
Compound of 水 (water) and 生 (life/living). The spelling 水棲 uses 棲 (dwelling) to emphasize habitat.