Fisheries, the main source of income for more than 55 million people, fell 5%.

Environmentalists attribute the decline in world fishing to warming the oceans.

The greatest decrease in the level of fishing was recorded in the East China and North Seas, and 35% less fish were caught in the fishing regions of these seas.

At the same time, in the Baltic and Indian Ocean, fish became a little more. But, according to environmentalists, this is not for long - with an increase in water temperature there is a risk that many species of fish will begin to decline.

Scientists are supposed to increase the water temperature of the oceans by the end of this century by 3.2 degrees Celsius, and this will lead to an increase in the acidity of water and, consequently, to a decrease in the oxygen content in it.

Conservationists advise fishermen to avoid overfishing.

Today, over 85% of the world's fish stocks are depleted due to excessive exploitation and require restoration after intensive exploitation.

The level of world fish consumption per person per year exceeded 18 kilograms and continues to grow. It is estimated that now mankind eats fish four times more than 60 years ago.

The oceans make up about 70.8% of the earth’s surface; the volume of water in the oceans is estimated at 1.3 billion cubic kilometers.

The highest water temperature in the Pacific Ocean, where it warms up to 19.4 degrees Celsius at the surface, the lowest - about 1 degree - in the Arctic Ocean. And the average temperature of the surface waters of the oceans is about 17.5 degrees Celsius.