break_water
1. [ verb ] show the fins above the water while swimming (of fish)
Synonyms: fin
Examples:

"The sharks were finning near the surface"

Related terms: swim fin
Similar spelling:   breakwater
  break_out
  break_with
  bracteate
  brachiate
  break-dance
  break_dance
  breakout
  breakdown
  break_through
  Brackett