Theory

The human body already has a way of adapting to water. The skin on the hands and feet turns wrinkly when it is in the water for a longer period of time. This is to get more grip.

"In a recent study conducted on a sample population in three different contexts - normal, dry, and wrinkly hands (formed from soaking in warm water for 30 min), the participants were able to pick up wet marbles more quickly with wrinkled fingers. The study concluded that wrinkled fingers provide a better grip for holding objects.

A similar effect in the toes gives us a better grip while walking in the rain.

Studies also state that wrinkled fingers might have served an added advantage for our human ancestors to collect wet vegetables and food from streams."

https://www.news-medical.net/health/Why-Does-Skin-Go-Wrinkly-in-Water.aspx

Making a wrinkly wearable with found materials

Testing the feeling of a wrinkly second skin

Marine mammals live parttime in water, their body adapted to that. They have a thick skin to keep them warm, their ears and noses can close when they enter the water and they can hold their breath for a longer period of time.

Since the Homo Aqua will live partime in water as well, I would like to see how these abilities work within the human body.

"Pinnipeds can close their nostrils completely to prevent water from entering the nasal cavity while diving..."

https://mmapl.ucsc.edu/normal-anatomy-sea-lion/special-senses

Experimenting with with wearables that close off your nose or ears