What modifications are needed for my sea creature to able to hold its breath for weeks?

I am interested in an idea for a creature that is air-breathing, but spends a lot of time at depths of (100m to 300m) and sometimes briefly on land. An adult is about the size of a human, and is warm-blooded, although not necessarily mammal.

An air-breathing version of a mermaid/man, that spends weeks under water without surfacing.

I'm flexible on shape and form, but I'm after the biological modifications I have to make to such an air-breathing animal who spends its weeks-long migration periods submerged under the ocean surface.

is a duplicate

This question has been asked before and has already been answered. It should be marked as a duplicate.

Please enter the URL of the proposed duplicate in the details field below.

not constructive

This question cannot be answered in a way that is helpful to anyone. It's not possible to learn something from possible answers, except for the solution for the specific problem of the asker.

Communities

What modifications are needed for my sea creature to able to hold its breath for weeks?

0 comment threads

0 answers