duck dive

From the way a duck puts its head down and bottom up in the air when diving underwater.

duck dive (third-person singular simple present duck dives, present participle duck diving, simple past and past participle duck dived)

1. (surfing) to push one's surfboard (usually a shortboard) underwater nose-first, to get the surfer and board under a wave that has broken or is just about to break.

duck dive (plural duck dives)

1. (surfing) the action of duck diving (see verb).

• turn turtle