how do the stinging cells of a jellyfish aid their survival
Jellyfish Jellyfish or jellies[1] are softbodied, free-swimming aquatic animals with a gelatinous umbrella-shaped bell and trailing tentacles. The bell can pulsate to acquire propulsion and locomotion. The tentacles may be utilized to capture prey or defend against predators by emitting toxins in a painful sting. Jellyfish species are classified in the subphylum Medusozoa which makes up a major part of the phylum Cnidaria, although not all Medusozoa species are considered to be jellyfish.
Brine shrimp Brine shrimp can tolerate any levels of salinity from 25‰ to 250‰ (25–250 g/L),[10] with an optimal range of 60‰–100‰,[10] and occupy the ecological niche that can protect them from predators.[11] Physiologically, optimal levels of salinity are about 30–35‰, but due to predators at these salt levels, brine shrimp seldom occur in natural habitats at salinities of less than 60–80‰. Locomotion is achieved by the rhythmic beating of the appendages acting in pairs. Respiration occurs on the surface of the legs through fibrous, feather-like plates (lamellar epipodites)[8]