Jellyfish research focuses on understanding the biology, ecology, behavior, and evolution of jellyfish, which are gelatinous marine animals belonging to the phylum Cnidaria. Researchers study a wide range of topics related to jellyfish, such as their feeding habits, reproduction, interactions with other marine organisms, and the environmental factors that influence their populations. Jellyfish play important roles in marine ecosystems, and research in this area helps scientists better understand and conserve these unique and often misunderstood creatures.