Thentheytaketurns,andopenthegaptoswimupthroughthe"net",sotheyareoftenseenbreakingthesurfacewithenoughspeedtogetoutofthewater,oftenwithhalf-openmouth,andthewatergushingoutbeforeitclosesinonthecatch.
What's a sentence that uses these characters?
Then they take turns, and open the gap to swim up through the "net", so they are often seen breaking the surface with enough speed to get out of the water, often with half-open mouth, and the water gushing out before it closes in on the catch.