This one is for the space guys. What happens if the capsule is damaged and starts taking on water before rescue arrives?

A pod of Dolphins stopped by to say welcome home to the Astronauts! 🐬 pic.twitter.com/0XXdMJbKG8

— DogeDesigner (@cb_doge) March 18, 2025

I know an incident occured in the Gemini program and NASA swore the astronaut screwed up but what happens if its a case of legit damage and water starts entering the capsule?