"My king's patron was Ulmo, Valar of the Sea. Even when we were landlocked in Gondolin, every elf knew how to swim," Glorfindel said. "More recently we lived in Imladris. Any elf who couldn't swim when they got there, quickly learned."

He nodded at that. Apparently this ability was either not suited for this environment or was too powerful and might harm more than just the monsters. He understood that one completely.