Answer:
Hydra
Explanation:
These are the options for the question;
hydra
Pegasus
sphinx
phoenix
Class Language arts
Mythological beast can as well be
called a fabulous creature/beast. They are usually supernatural animals,which are hybrids and believe to have some part of human. Their existence might not be proved, but base on the traditional belief it can be described, even before history turned to science. Example are Vampire, Hydra, Bambee.
Hydra, according to greek mythology, can be found in water or near water. It was a monster with many heads,that has a serpent look. It was believed that the head of the Hydra will grow back if cut, and their teeth were used in raising skeleton from the dead
Therefore, the mythological beast that a hero would encounter in or near water is Hydra.