Proposed is a beverage made of jellyfish and a production method thereof, including mixing an animal extract, sweeteners, additives and preservatives, and pouring the resulting mixture into containers, distinguished in that the animal extract is a filtrate of an aqueous extract of ground jellyfish, and in that the additives contain a flavoring agent and/or an acidulant. In addition, the animal extract is obtained by means of the extraction, over the course of 6-12 hours in potable water having a temperature of 15-18°С, of Rhopilema jellyfish which has been ground to a size of 2-4 mm, preferably material from the bell of the Rhopilema jellyfish with a mass ratio of raw material to liquid such as 1:2, the produced extract is divided into precipitate and liquid fraction, which, if necessary, is diluted with water to a concentration lower than 100 and higher than 30%, after which same is mixed with the sweetener, with the additives, including the flavoring agent and/or the acidulant, and with the preservative, after which, in compliance with sterility measures, same is filtered, poured into containers and sealed. The filtrate of the aqueous extract of ground jellyfish is used in a quantity of 900-927.6 grams per liter of the beverage. Natural sweeteners and fruit juice concentrates, or flavoring agents identical to natural counterparts thereof, are used. The sweetener is comprised of a mixture of fructose and glucose, or of sugar substitutes intended for diabetics. The composition of the additives may contain sodium alginate in a quantity of no more than 2 grams per liter of beverage. The preservative, sodium benzoate, is used in a quantity of no more than 4 grams per liter of beverage. The precipitate which remains after removing the liquid fraction from the extract is used for producing collagen. The invention allows for decreasing the cost of producing a beverage, while allowing for producing isotonic beverages, and for expanding the raw material base for the produc
