Haenyeo, also known as "sea women", Jin So-hee, 28, Woo Jung-min, 35, and Kim Myung-soon, measure the weight of sea cucumbers that they harvested, at a port in Geoje, South Korea, March 30, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women", Jin So-hee, 28, and Kim Myung-soon, float in the water as they work in the sea off Geoje, South Korea, March 31, 2021. The disappearance of the seaweed, which the haenyeo harvest as food and which also provides habitat for other creatures they hunt, has forced the women to routinely dive to increasing depths, at least 12 metres, Jin said. "There is less for us to collect and we have to dive deeper, which is physically challenging," Jin said. Besides climate change, the women say they also have to deal with more pollution in the seas, complicating their already dangerous jobs. "I'm finding more golf balls than sea cucumbers now," Jin said. REUTERS/Kim Hong-Ji

Jin So-hee, 28, a haenyeo, also known as a "sea woman", works in the sea off Geoje, South Korea, March 30, 2021. The disappearance of the seaweed, which the haenyeo harvest as food and which also provides habitat for other creatures they hunt, has forced the women to routinely dive to increasing depths, at least 12 metres, Jin said. "There is less for us to collect and we have to dive deeper, which is physically challenging," Jin said. Besides climate change, the women say they also have to deal with more pollution in the seas, complicating their already dangerous jobs. "I'm finding more golf balls than sea cucumbers now," Jin said. REUTERS/Kim Hong-Ji

A senior haenyeo, also known as a "sea woman", walks out of the water after diving in the sea, in Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Jin So-hee, 28, a haenyeo, also known as a "sea woman", gives a shoulder massage to Ko Sun-a, a senior haenyeo, before going out to the water to work in the sea, in Geoje, South Korea, March 30, 2021. Jin says her hopes of making a living as a free diver are now further threatened by climate change. "The amount of seafood we can collect is continuously decreasing," she said. "I thought that as long as my body is healthy, I could have been the oldest haenyeo when I'm 90 or 100. But now that I think about it, my health is not the only concern. I'm worried this job will change drastically or even disappear because of climate change." REUTERS/Kim Hong-Ji

Woo Jung-min, 35, a haenyeo, also known as a "sea woman", poses for a photograph with sea cucumbers that she harvested in the sea off Geoje, South Korea, March 31, 2021. "If we each collected 500 kilograms worth of sea cucumbers last year, this year it's only half that," Woo said. "The problems seem very real to us. Today, I'm thinking once again 'this is really serious.'" REUTERS/Kim Hong-Ji

Ko Keum-sun, 69, a senior haenyeo, also known as a "sea woman", carries sea food that she harvested in the sea, as she walks out of the water in Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Senior haenyeo, also known as "sea women" Jung Sun-ja, 84, Yoon Yeon-ok, 74 and Ko Keum-sun, 69, pose for a photograph after working in the sea in Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Jin So-hee, 28, and Woo Jung-min, 35, film a seafood stall as they work on content for their YouTube channel during their day off in Geoje, South Korea, April 1, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Ko Seung-yo, 72, a senior haenyeo, also known as a "sea woman", wears rubber clay in her ears as she walks back to the port after working in the sea in Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Woo Jung-min, 35, and Jin So-hee, 28, carry a bucket of conch to a seafood restaurant in Geoje, South Korea, March 31, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Jin So-hee, 28, and Ko Sun-a, put on wet suits as they prepare to work in the sea, in Geoje, South Korea, March 30, 2021. Jin says her hopes of making a living as a free diver are now further threatened by climate change. "The amount of seafood we can collect is continuously decreasing," she said. "I thought that as long as my body is healthy, I could have been the oldest haenyeo when I'm 90 or 100. But now that I think about it, my health is not the only concern. I'm worried this job will change drastically or even disappear because of climate change." REUTERS/Kim Hong-Ji

Kim Myung-soon, a haenyeo, also known as a "sea woman", comes up for air as she dives in the sea off Geoje, South Korea, March 31, 2021. REUTERS/Kim Hong-Ji

Jin So-hee, 28, a haenyeo, also known as a "sea woman", dives into the water to harvest sea cucumbers in the sea off Geoje, South Korea, March 30, 2021. The disappearance of the seaweed, which the haenyeo harvest as food and which also provides habitat for other creatures they hunt, has forced the women to routinely dive to increasing depths, at least 12 metres, Jin said. "There is less for us to collect and we have to dive deeper, which is physically challenging," Jin said. Besides climate change, the women say they also have to deal with more pollution in the seas, complicating their already dangerous jobs. "I'm finding more golf balls than sea cucumbers now," Jin said. Jin So-hee/Handout via REUTERS

Jin So-hee, 28, a haenyeo, also known as a "sea woman", dives into the water to harvest sea cucumbers in the sea off Geoje in South Korea, March 31, 2021. Jin says her hopes of making a living as a free diver are now further threatened by climate change. "The amount of seafood we can collect is continuously decreasing," she said. "I thought that as long as my body is healthy, I could have been the oldest haenyeo when I'm 90 or 100. But now that I think about it, my health is not the only concern. I'm worried this job will change drastically or even disappear because of climate change." REUTERS/Kim Hong-Ji

Jin So-hee, 28, a haenyeo, also known as a "sea woman", checks the weather forecast at her home in Geoje, South Korea, March 30, 2021. Jin says her hopes of making a living as a free diver are now further threatened by climate change. "The amount of seafood we can collect is continuously decreasing," she said. "I thought that as long as my body is healthy, I could have been the oldest haenyeo when I'm 90 or 100. But now that I think about it, my health is not the only concern. I'm worried this job will change drastically or even disappear because of climate change." REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Jin So-hee, 28, and Woo Jung-min, 35, apply eco-friendly sun screen on their faces as they prepare to work in the sea off Geoje, South Korea, March 31, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Jin So-hee, 28, a haenyeo, also known as a "sea woman", collects diving suits from a washing line as she prepares to work in the sea, at a port in Geoje, South Korea, March 31, 2021. Jin says her hopes of making a living as a free diver are now further threatened by climate change. "The amount of seafood we can collect is continuously decreasing," she said. "I thought that as long as my body is healthy, I could have been the oldest haenyeo when I'm 90 or 100. But now that I think about it, my health is not the only concern. I'm worried this job will change drastically or even disappear because of climate change." REUTERS/Kim Hong-Ji

Woo Jung-min, 35, a haenyeo, also known as a "sea woman", dives into the water as she works in the sea off Geoje, South Korea, March 30, 2021. "If we each collected 500 kilograms worth of sea cucumbers last year, this year it's only half that," Woo said. "The problems seem very real to us. Today, I'm thinking once again 'this is really serious.'" REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Jin So-hee, 28, and Woo Jung-min, 35, prepare to dive into the sea off Geoje, South Korea, March 30, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Discarded plastic waste floats in the sea off Geoje, South Korea, March 30, 2021. REUTERS/Kim Hong-Ji

Woo Jung-min, 35, a haenyeo, also known as a "sea woman", dives into the water near a man fishing, as she works in the sea off Geoje, South Korea, March 31, 2021. "If we each collected 500 kilograms worth of sea cucumbers last year, this year it's only half that," Woo said. "The problems seem very real to us. Today, I'm thinking once again 'this is really serious.'" REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Jin So-hee, 28, and Woo Jung-min, 35, talk to each other in the sea off Geoje, South Korea, March 30, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women", Jin So-hee, 28, and Woo Jung-min, 35, go shopping as work for the day was canceled due to a strong wind, in Geoje, South Korea, April 1, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

A notebook belonging to Woo Jung-min, a haenyeo, also known as a "sea woman", shows a page with days written down which she was available to go diving in the sea and the amounts of seafood that was harvested in early 2020 and early 2021, pictured near the port in Geoje, South Korea, April 1, 2021. REUTERS/Kim Hong-Jiv

Senior haenyeo, also known as a "sea women", sell seafood that they harvested in the sea, at the port in Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Jin So-hee, 28, a haenyeo, also known as a "sea woman", talks to her colleague Woo Jung-min (not pictured) on the way to work in Geoje, South Korea, March 30, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

A traditional pair of diver's goggles, flippers and diving weights belonging to a senior haenyeo, also known as a "sea woman", sit on a rock in Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Sea urchins that were harvested by senior haenyeo, also known as "sea women", are pictured in Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Jin So-hee, 28, and Woo Jung-min, 35, look towards the sea as work for the day was cancelled due to strong wind, in Geoje, South Korea, April 1, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

A senior haenyeo, also known as a "sea woman", comes up for air while diving in the sea off Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Woo Jung-min, Ko Sun-a and Jin So-hee (R), 28, are seen on a fishing boat after diving in the sea off Geoje, South Korea, March 30, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Haenyeo, also known as "sea women" Jin So-hee, 28, and Woo Jung-min, 35, count money on their payday in Geoje, South Korea, April 1, 2021. Jin and Woo are some of the youngest members of a centuries-old tradition. The vast majority of living haenyeo are now over the age of 70. The pair run a YouTube channel called "Modern Haenyeo" chronicling their lives and work, with their most popular videos garnering more than 600,000 views. REUTERS/Kim Hong-Ji

Ko Hwa-ja, 82, a senior haenyeo, also known as a "sea woman", comes up for air as she works in the sea off Busan, South Korea, April 6, 2021. REUTERS/Kim Hong-Ji

Woo Jung-min, 35, a haenyeo, also known as a "sea woman", displays sea squirts living on a discarded plastic bag that she found under the water while diving in the sea off Geoje, South Korea, March 31, 2021. REUTERS/Kim Hong-Ji

Diving suits for haenyeo, also known as a "sea women", are hung out to dry on a washing line at a port in Geoje, South Korea, March 31, 2021. REUTERS/Kim Hong-Ji