These retired women in Texas have been through infertility, illness, layoffs, addiction and disappointing marriages. Now they are trying to create a utopia just for themselves.

Humans have a long history of diving to forage from the seabed and today elite freedivers are reaching greater depths than ever. Some researchers argue humans belong in the sea.

In fact, humans have been freediving for thousands of years, mainly to gather food and resources from the ocean floor. For ...