On the last spot is the Sea Nettle. This is named after the nettle plants. They have very long, dangling tentacles and are often found on the East Coast of the USA particularly at the Chesapeake Bay. The blooms of sea nettle are very common and they can be lethal. They come with approximately 24 tentacles and can extend as much as 6 feet long. The stings are poisonous and can result to immediate pain and they are very dangerous.