Jellyfish, as an ancient and mysterious sea creature, has an evolutionary history of more than 500 million years. These transparent creatures are often misunderstood, as many people tend to think of them as simple and easy to survive due to their soft bodies and floating appearance. In fact, the survival of jellyfish depends on complex ecosystems and environmental conditions.

The body of a jellyfish is unique, consisting of a gelatinous umbrella and tentacles. Muscles under the umbrella contract to help the jellyfish move up and down in the water. At the same time, the tentacles are covered with stinging cells that release venom, which is used to catch prey and defend against predators. Different species of jellyfish differ in their toxicity and hunting methods, and the venom of some jellyfish can cause serious harm to humans.

The preparation of jellyfish specimens usually involves preserving freshly collected jellyfish in a specific solution to maintain their shape and color. This process requires not only technical expertise, but also a deep understanding of jellyfish biology. When the specimen is displayed, it can clearly show the structural characteristics of jellyfish, and help people better understand its physiological characteristics and ecological functions.

The ecological role of jellyfish should not be underestimated. As part of the Marine food chain, they prey on small plankton and are also prey for many Marine fish and other creatures. Fluctuations in jellyfish populations can have profound effects on Marine ecosystems. For example, when jellyfish populations surge, it can lead to a decline in fishery stocks as they compete with fish for food and may prey on fish eggs.