Each year, on the Friday before the festival opens to the public, local 4th grade classes get the opportunity to get a little wet while learning how to take care of our natural resources. Kids' Day is a special OysterFest preview which features an array of hands-on activities, including touch tanks, designed to help kids explore and explain the natural resource wonders of Mason County. Kids' Day activities and exhibits are designed to help kids learn about our local waters, what lives in them, how to keep them clean and how to be safe in and around the water.

Many teachers use the annual Kids’ Day at OysterFest experience as a starting point for some of their environmental studies units.

This event is co-hosted by Washington Sea Grant and Shelton Skookum Rotary Club in partnership with many local and state agencies. Nearly 100 members of the local community volunteer to present Kids' Day.  Over the past two decades, over 11,000 local fourth grade students have participated.