Ethiopians fish on the Awasa lake in Hawassa, Ethiopia, November 22, 2019. REUTERS/Tiksa Negeri

A fisherman is seen during a rainy day at the Rodrigo de Freitas lagoon in Rio de Janeiro, Brazil November 11, 2019. REUTERS/Sergio Moraes

A fisherman is seen during a rainy day at the Rodrigo de Freitas lagoon in Rio de Janeiro, Brazil November 11, 2019. REUTERS/Sergio Moraes

The wreck of the Golden Harvest, a fishing vessel that ran aground on the banks of Loch Linnhe in 2011, is seen in front of the UK's highest mountain Ben Nevis near Fort William, Scotland, Britain November 10, 2019. REUTERS/Russell Cheyne

The wreck of the Golden Harvest, a fishing vessel that ran aground on the banks of Loch Linnhe in 2011, is seen in front of the UK's highest mountain Ben Nevis near Fort William, Scotland, Britain November 10, 2019. REUTERS/Russell Cheyne

The wreck of the Golden Harvest, a fishing vessel that ran aground on the banks of Loch Linnhe in 2011, is seen in front of the UK's highest mountain Ben Nevis near Fort William, Scotland, Britain November 10, 2019. REUTERS/Russell Cheyne

The wreck of the Golden Harvest, a fishing vessel that ran aground on the banks of Loch Linnhe in 2011, is seen in front of the UK's highest mountain Ben Nevis near Fort William, Scotland, Britain November 10, 2019. REUTERS/Russell Cheyne

Fishermen's boats are seen during a sunset in Kraljevica, Croatia, October 24, 2019. REUTERS/Antonio Bronic

A fish hook used by fish buyers is pictured at the Ofunato fish market in Ofunato, Japan September 24, 2019. REUTERS/Edgar Su

Sanma (Pacific Saury) fish are pictured at the Ofunato fish market in Ofunato, Japan September 24, 2019. REUTERS/Edgar Su

Fish buyers wearing rubber boots write their bids as they take part in a fish auction at the Ofunato fish market in Ofunato, Japan September 24, 2019. REUTERS/Edgar Su

Fish are sorted into a box by fishermen at the Ofunato fish market in Ofunato, Japan September 24, 2019. REUTERS/Edgar Su

Palestinian fishermen repair their net at Al-Shati refugee camp in Gaza City September 16, 2019. Picture taken September 16, 2019. REUTERS/Mohammed Salem TPX IMAGES OF THE DAY

Fishermen fish in the Mekong River in Nakhon Phanom, Thailand July 24, 2019. Picture taken July 24, 2019. REUTERS/Soe Zeya Tun

An Iraqi Marsh Arab man fishes at the Chebayesh marsh in Dhi Qar province, Iraq April 13, 2019. Picture taken April 13, 2019. REUTERS/Thaier al-Sudani

An Iraqi Marsh Arab man fishes at the Chebayesh marsh in Dhi Qar province, Iraq April 13, 2019. Picture taken April 13, 2019. REUTERS/Thaier al-Sudani

Men row a boat in the waters of the Arabian Sea on a smoggy evening in Mumbai, India, January 18, 2019. REUTERS/Francis Mascarenhas

A fishing boat sails during the last sunset of 2018 in Karachi, Pakistan, December 31, 2018. REUTERS/Akhtar Soomro

A man paddles a handmade boat across the Yamuna river on a foggy winter morning in New Delhi, India December 27, 2018. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY

Men paddle their handmade boats across the Yamuna river on a foggy winter morning in New Delhi, India December 27, 2018. REUTERS/Adnan Abidi

A man paddles a handmade boat across the Yamuna river on a foggy winter morning in New Delhi, India December 27, 2018. REUTERS/Adnan Abidi

A man fishes on a bank of the Yenisei River covered with snow and hoarfrost with the air temperature at about -16 degrees Celsius outside the Siberian city of Krasnoyarsk, Russia December 10, 2018. REUTERS/Ilya Naymushin TPX IMAGES OF THE DAY

Heads of discarded pufferfish are seen near Ohara port in Isumi, east of Tokyo, Japan November 21, 2018. Picture taken November 21, 2018. To match Insight CLIMATE-CHANGE/JAPAN-FUGU REUTERS/Issei Kato

Pufferfish caught by anglers swim in buckets at Ohara port in Isumi, east of Tokyo, Japan November 21, 2018. Picture taken November 21, 2018. To match Insight CLIMATE-CHANGE/JAPAN-FUGU REUTERS/Issei Kato

A man fishes on a bank of the Yenisei River covered with snow and hoarfrost with the air temperature at about -16 degrees Celsius outside the Siberian city of Krasnoyarsk, Russia December 10, 2018. REUTERS/Ilya Naymushin

A man fishes on a bank of the Yenisei River covered with snow and hoarfrost with the air temperature at about -16 degrees Celsius outside the Siberian city of Krasnoyarsk, Russia December 10, 2018. REUTERS/Ilya Naymushin

A fisherman removes fish from his net on Ghoramara Island, India, October 25, 2018. Picture taken on October 25, 2018. REUTERS/Rupak De Chowdhuri

Frost is seen on ropes next to a moored yacht with air temperature at about -30 degrees Celsius near Krasnoyarsk, Russia December 4, 2018. REUTERS/Ilya Naymushin

Frost is seen next to a moored yacht with air temperature at about -30 degrees Celsius near Krasnoyarsk, Russia December 4, 2018. REUTERS/Ilya Naymushin

A frost is seen on a tugboat on a bank of the Yenisei River on the end of navigation season with air temperature at about -34 degrees Celsius, near the settlement of Galanino, north of Siberian city of Krasnoyarsk, Russia, December 3, 2018. REUTERS/Ilya Naymushin

Navigation buoys are stored for the winter on a bank of the Yenisei River on the end of navigation season, near the settlement of Galanino, north of Siberian city of Krasnoyarsk, Russia, December 3, 2018. REUTERS/Ilya Naymushin

A fish is seen at Ibn Hamido seafood restaurant in Port Said city, northeast of Cairo, Egypt, November 28, 2018. REUTERS/Amr Abdallah Dalsh

Fish are seen on a tray before they are smoked for sale in Jamestown, Accra, Ghana November 28, 2018. REUTERS/Zohra Bensemra

A dog and a cat enjoy the sun in front of fishing boats in Bar, Montenegro, November 14, 2018. REUTERS/Stevo Vasiljevic

A fish hangs on a wire at the seafront in Havana, Cuba November 5, 2018. Picture taken November 5, 2018. REUTERS/Alexandre Meneghini TPX IMAGES OF THE DAY

Fish used as bait lay at the seafront in Havana, Cuba November 9, 2018. Picture taken on November 9, 2018. REUTERS/Alexandre Meneghini

A fish hangs on a wire at the seafront in Havana, Cuba November 5, 2018. Picture taken November 5, 2018. REUTERS/Alexandre Meneghini

A plate of Mojarra fish, also known as Gerreidae, is pictured at a seafood restaurant in Monterrey, Mexico November 9, 2018. REUTERS/Daniel Becerril

Fish on display in a fish market at the Fisherman's Wharf in La Libertad, El Salvador November 8, 2018. REUTERS/Jose Cabezas

Fish are seen at the fish market at Fisherman's Wharf in La Libertad, El Salvador, November 8, 2018. REUTERS/Jose Cabezas

Fish are seen at the fish market along Fisherman's Wharf in La Libertad, El Salvador, November 8, 2018. REUTERS/Jose Cabezas

Fish are seen at the fish market along Fisherman's Wharf in La Libertad, El Salvador, November 8, 2018. REUTERS/Jose Cabezas

Fish are displayed at the fish market along Fisherman's Wharf in La Libertad, El Salvador, November 8, 2018. REUTERS/Jose Cabezas

REFILE - CLARIFYING CAPTION A fisherman pilots a boat with birds, known locally as fish hawks, perched onboard along a river in Wuzhen, Zhejiang province, China, November 8, 2018. REUTERS/Jason Lee

An excavator removes floating dead fish from water near the fish farms at the Euphrates River in Mussayab district, Iraq November 3, 2018. Picture taken November 3, 2018. REUTERS/Alaa al-Marjani

A dead fish is seen floating near the fish farms at the Euphrates River in Mussayab district, Iraq November 3, 2018. Picture taken November 3, 2018. REUTERS/Alaa al-Marjani

Floating dead fish are seen near the fish farms, at the Euphrates River in Mussayab district, Iraq November 2, 2018. Picture taken November 2, 2018. REUTERS/Alaa al-Marjani

Little egrets are seen at a fish farm at the Euphrates River in Mussayab district, Iraq November 2, 2018. Picture taken November 2, 2018. REUTERS/Alaa al-Marjani

Dead fish covered with worms are seen near fish farms at the Euphrates River in Mussayab district, Iraq November 3, 2018. Picture taken November 3, 2018. REUTERS/Alaa al-Marjani

Floating dead fish are seen near fish farms at the Euphrates River in Mussayab district, Iraq November 3, 2018. Picture taken November 3, 2018. REUTERS/Alaa al-Marjani

Dead fish are being loaded onto a truck near fish farms at the Euphrates River in Mussayab district, Iraq November 3, 2018. Picture taken November 3, 2018. REUTERS/Alaa al-Marjani

The Eyes of Horus, believed to protect fishermen from harm while out at sea, are seen on a luzzu, a traditional Maltese fishing boat, in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

Fishing nets are seen on a quay in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

The Eyes of Horus, believed to protect fishermen from harm while out at sea, are seen on a luzzu, a traditional Maltese fishing boat, in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

The Eyes of Horus, believed to protect fishermen from harm while out at sea, are seen on a luzzu, a traditional Maltese fishing boat, in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

The Eye of Horus, believed to protect fishermen from harm while out at sea, is seen on a luzzu, a traditional Maltese fishing boat, in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

The Eye of Horus, believed to protect fishermen from harm while out at sea, is seen on a luzzu, a traditional Maltese fishing boat, in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

The Eyes of Horus, believed to protect fishermen from harm while out at sea, are seen on a partially painted luzzu, a traditional Maltese fishing boat, in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

Aluminium radar capture fishing gear markers are seen on a fishing vessel in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi

Aluminium radar capture fishing gear markers are seen on a fishing vessel in the fishing village of Marsaxlokk, Malta November 4, 2018. REUTERS/Darrin Zammit Lupi