So that’s the cost to purchase a lifetime hunting license if the person is currently an Infant to Age 5.

Any hunter under age 16 must follow these rules:

•Hunters from 10–15 years of age must be in the presence of, and under the effective control of, a junior hunter supervisor.

•Hunters under the age of 10 must be in the presence of, and under the effective control of, a junior hunter supervisor who remains at all times within 20 feet of the hunter.

https://www.maine.gov/ifw/hunting-trapping/hunting/laws-rules/junior-hunters.html