The straw designed for the intake of water based drink from a container. In the lower part of the flexible straw there are holes that are connected to the main tube of the straw. Above the holes and attached to the straw, there is a floating device which allows for the intake of the drink from the container only from fixed depth ranges, preferably from 5-15 mm from the surface of the water. The straw allows for the protection of the organism of the user from negative effects of the drink on the body's cells.