The crossword solution for the term 'Jellyfish Danger' is VENOM, which is a five letter word. VENOM is a toxic substance produced by certain animals, such as jellyfish, that can cause harm to other organisms. Jellyfish are particularly dangerous because their VENOM can cause severe pain and even death in humans. Therefore, it is important to be aware of the potential danger posed by jellyfish when swimming in the ocean.