flipper

US /ˈflɪp.ɚ/
UK /ˈflɪp.ɚ/
"flipper" picture
1.

aleta

a broad flat limb (as of a seal or whale) adapted for swimming

:
The seal used its flippers to glide through the water.
La foca usó sus aletas para deslizarse por el agua.
Whales have powerful flippers for propulsion.
Las ballenas tienen potentes aletas para la propulsión.
2.

aletas

a large flat rubber shoe worn by swimmers for propulsion through water

:
He put on his diving mask and flippers before jumping into the ocean.
Se puso su máscara de buceo y sus aletas antes de saltar al océano.
Learning to swim with flippers can make you faster.
Aprender a nadar con aletas puede hacerte más rápido.