* Mermaids: Half-human, half-fish creatures that are said to live in the ocean.
* Sea serpents: Giant snakes or dragons that are said to live in the ocean.
* Kraken: A giant squid that is said to be able to destroy ships.
* Leviathan: A giant whale or sea monster that is mentioned in the Bible.
* Nessie: A giant plesiosaur that is said to live in Loch Ness in Scotland.
* Ogopogo: A giant lake monster that is said to live in Okanagan Lake in British Columbia, Canada.
* Champ: A giant lake monster that is said to live in Lake Champlain in Vermont and New York.
* Mokele-mbembe: A giant dinosaur that is said to live in the Republic of the Congo.