How long can honu turtles hold their breath underwater?

Answer 1

I'm pretty sure they can breathe for several hours underwater or at least mine does.

Indefinitely. Turtles are true amphibians. They come to land to lay eggs and to sun themselves

( they're cold blooded, too ).

Answer:

Turtles do not breathe underwater (no gills) they have to surface periodically to take a breath. Underwater they hold their breath. As reptiles their metabolism is slow enough to stretch out a lungfull of oxygen for several minutes.

Answer 2

Green sea turtles, also known as honu turtles, can hold their breath for around 4-7 hours while resting or sleeping underwater. However, they typically stay submerged for 4-5 minutes while actively foraging or swimming. The ability to hold their breath for extended periods allows them to dive to depths of up to 1,500 feet (450 meters).

Answer 3

About 500 years.