Survival skills
A human being can survive an average of three to five days without the intake of water. The issues presented by the need for water dictate that unnecessary water loss by perspiration be avoided in survival situations. The need for water increases with exercise.
Tamara Rahn
Thanks to her alien physiology, Tamara has superhuman strength on Earth, which increases under water, although she has an inability to breathe out of water in Earth air for more than a few minutes without artificial aid. She has superhuman water speed, stamina, and durability. She has the ability to survive underwater for indefinite periods, and specially developed vision which gives her the ability to see clearly in the murky depths of the ocean.