Four cards are dealt to every player. Players pass one card at a time as fast as possible to the person on their left. When a player gets four matching cards, he/she grabs a dolphin from the center of the table. All other players immediately take the big plunge (SPLASH!) and grab the remaining dolphins!
The disturbance is typically caused by a solid object suddenly hitting the surface, although splashes can occur in which moving liquid supplies the energy. This use of the word is onomatopoeic; in the past, the term "plash" has also been used. Slow motion video of a fruit falling into water.