Blow:
The sudden expulsion of air from the blowhole (the dolphins' nose), producing a mist of water droplets often quite visible.
Tailslap:
Abrupt strike of flukes on the water surface (here performed belly-up); sometimes expressing irritation.
Breach:
A powerful leap followed by a side-flop, as a demonstration of physical strengh or for longdistance communication.
Leap:
As a display of exuberance, to breath rapidly before or after a deep dive, or during a speedy swim.
Travelling:
When not in search of food, the dolphins travel of a speed of about 6.5 km per hour, without long dives.
Socializing:
Much physical contact among the animals, to reinforce social bonds or the group hierarchy, or as a part of courtship.
Rest:
Resting dolphins swim slowly close to the surface in compact groups. It is better not to disturb them.