The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower ... Melissa Ilardo found herself ...

The all-female Korean Haenyeo divers show genetic adaptations to cold-water diving involving their blood pressure and cold tolerance. It's "like they have a superpower," says one of the researchers.

Ilardo decided to compare the Haenyeo to other elderly women on Jeju Island who aren't divers but have a similar genetic background, and to still others off-island who aren't related. There were about ...