Of or pertaining to water as a habitat or resort; esp. of plants and animals: Living or growing in or near water.

able to respire when submerged in water; characterized by this ability; contrasted with air-breathing.

Of, belonging to, or characteristic of nekton; designating aquatic organisms which can swim and move independently of water currents. Cf. planktonic…

Of an organism: that inhabits or prefers an environment of (esp. rapidly) flowing water. Contrasted with rheophobic, adj. Cf. lotic, adj.

= rheophile, adj.

= rheophile, adj.