Summer Camps at Mercer Slough

mseec camp logo1625 118th Ave. SE, Bellevue, WA 98005 | On a 320-acre wetland just north of I-90

The outdoor environment takes center stage at Mercer Slough Environmental Education Center, a collaboration between the City of Bellevue and Pacific Science Center. This award winning, LEED Gold certified facility features spectacular views of this 320-acre wetland, laboratories, classrooms, a visitor center, a tree house and hiking trails. The center's unique features provide the perfect setting for camps brimming with hands-on investigation. Experience a summer of discovery, outdoor adventure and environmental science at Mercer Slough.

Drop-Off & Pick-Up 
Morning Drop-Off takes place in the turn-around for camps in Licorice Fern and Salmonberry classrooms, and in the North parking lot for camps in Dragonfly or Pond Lily classrooms (View Mappdf). For full-day camps, drop-off takes place from 8:45 - 9 a.m. each day; camp activities begin promptly at 9 a.m. On Monday, please park and walk your child to his or her classroom. Other days, teachers will be waiting on the sidewalk for curb-side pick-drop off. Please do not leave your car unattended in the driveway between 8:35 and 9 a.m.

Afternoon Pick-Up takes place from 3:45 - 4 p.m. Pick-up takes place in the same location as drop-off. We allow a 10 minute grace period for picking up your camper; at 4:10 your child will be placed in extended day care for a $12 fee.

For half-day camps, check your confirmation materials for drop-off and pick-up details and times.

Kid Code

At pick-up you will be asked the Kid Code you selected at registration. This code functions as a password; share this code only with anyone authorized to pick up your child. 

This is a security measure to ensure all campers leave with authorized adults. Camp staff will release campers only to those who know the Kid Code, or who show picture identification that matches names listed on the medical form. If you forget your Kid Code before camp begins, ask the teachers as you drop off your child on the first day of camp. 

Emergency Contact Information

In case of emergency, or to contact camp staff, call (425) 450-0207

We may also be reached by calling Pacific Science Center:

  • Registration Office: (206) 443-2925, available M-F 8:30 a.m. - 4:30 p.m.
  • Reception: (206) 443-2001, available daily 8 a.m. - 6 p.m.

Extended Day Care

Morning extended day care is available beginning at 7 a.m.

Afternoon extended day care is available until 6 p.m.

  • Cost for each: $55 per 5 day week, $45 per 4 day week, or $12 daily
  • Please provide an extra snack for your child if you are using extended day care.
  • Afternoon care ends promptly at 6 p.m. After 6 p.m. a late fee of $10 for every 10 minutes will be due at the time of pick up.
  • For unplanned extended day care use, please inform the teacher in the morning and pay with cash or check when picking up your child.

Please drop off and pick up your camper in the Licorice Fern classroom in the building nearest to the Tree House.

What to Bring to Camp 

Our campers spend a large portion of every day outside. Please make sure your child is prepared for weather and that all items are labeled with your child's name.

Campers should bring the following each day:

  • Two snacks (Note: Please provide an extra snack if your child is staying for extended day care)
  • Large sack lunch (Camper Lunch Program is not offered at this location.)
  • Water bottle
  • Weather appropriate clothing
  • Waterproof jacket or poncho
  • Shoes or boots that can get wet and muddy and are comfortable for hiking
  • Hat (for sun protection and warmth)
  • Any medications listed on your medical form.
  • Give any medications to camp staff on the first day of camp.
  • Day pack for lunch, water, snacks and any other daily needed items

Please do not send any valuables with your child to camp. Valuables include, but are not limited to, money, hand-held games or music devices, pocket knives and cell phones.


We expect children to attend each day of camp (except for illness) and to arrive and depart at the scheduled time.

Many of our camps include multiple field trips that make late arrival and early pick-up difficult to accommodate. Campers who miss field trip departures will not be able to stay at the education center. Please avoid scheduling appointments and other activities during the camp day.

Communication During Camp

Each afternoon, we will send a daily camp summary from your camper's teachers to the email address provided at registration.

Parent Presentations

Some camps have a parent presentation on the last day of camp. Look for more information in your daily parent letter. 

Code of Conduct

Pacific Science Center is committed to providing a welcoming, safe and fun environment for all campers. Proper supervision and appropriate behavior are key components to a successful camp experience. In an effort to provide all campers with a safe and fun atmosphere, it is important that all campers exhibit respect for themselves, fellow campers, staff and the camp environment at all times.

Every camp session, camp staff and campers review and discuss procedures, structure and behavior expectations. Campers are asked to be respectful of other campers, staff and materials. Inappropriate, disruptive and/or violent behavior will not be tolerated. Examples of inappropriate behavior include, but are not limited to: fighting, name-calling, foul language, arguing, bullying, leaving the group or possessing weapons.

Minor behavioral problems will be addressed by camp staff. If behavior issues persist, parents or guardians will be contacted to work towards a resolution. If a camper's behavior continues to disrupt the camp or endangers the physical or emotional safety of themselves or others, Pacific Science Center reserves the right to cancel that individual's camp enrollment for a day or more with no refund.