Birthday Parties

Something Different for Your Child’s Birthday This Year
The Shoreline is a great place to have a birthday party, rain or shine. We have a large private indoor party room available and lots of activities to make your child’s birthday a true adventure. Read on for more details!

  • $200 for residents of Hayward, Castro Valley, and San Lorenzo
  • $250 for residents out of district
Your Birthday Party Package Includes:

30 minutes at the beginning and end of your rental for set-up and take-down.
• An hour of fun led by the Naturalist; families may choose two activities from the list below.
• Materials for 15 children
• A large private room (“Mud Lab”) and access to Habitat Room, outdoor deck and trails
• An additional two hours for opening presents and serving food
• Two 12-foot long tables and 40 chairs, two 4 foot tables

Additional Costs
• $5 fee per each additional child (25 children maximum)
• $50 fee for an additional half-hour Naturalist presentation

Naturalist-Led Activities
The naturalist will spend an hour with you and your guests. You may schedule with your naturalist what time you would like those activities to happen. Please choose two activities from the following list or create a custom activity with the naturalist.
Dipnetting – Fishing in the channel next to our building with small nets, looking for fish and other aquatic animals.
Feeding Frenzy – Feed the aquaria in our Habitat Room including our leopard shark pups and other Habitat Room residents.
Touch Tank – An opportunity to touch and handle some of our resident snails, crabs, and other aquatic animals (excluding the sharks).
Meet the Reptiles - We have two friendly gopher snakes that love to come out and meet visitors.  
Craft Activity – The naturalist will lead a craft activity that your guests can take home. Our most popular activity is painting pre-made ocean-themed magnets.
Trail Hike – Hike the trail and explore the salt marsh. Find edible plants and hidden wildlife, from gopher snake holes to jackrabbit scat!
Scavenger Hunt – Kids follow clues in the building or on the trail to complete the hunt while discovering the natural history of the shoreline. 
Custom Activity – If your party has a theme and you have some ideas for activities, we are happy to work with you to make them a reality.

The “Mud Lab” fits 40 people comfortably. There is plenty of counter space for presents and food. We have a small kitchenette with serving utensils, a dorm-size refrigerator (suitable for cupcakes and small cakes) and microwave. The microwave is suitable for reheating, not cooking.

Advance payment is required and due 30 days after reserving your date. You may with a credit card over the phone, with a mailed check, or in person. Checks can be mailed to “HSIC”, 4901 Breakwater Avenue, Hayward, CA 94545. Payment by check is acceptable no later than 3 weeks before your reservation. Cancellation is required two weeks in advance.

• Parents are asked to monitor the behavior of their guests.
• Many programs involve live animals that need to be handled carefully.
• Make sure that no paper products, candy wrappers, party favors or balloons end up outside the facility or in the salt marsh.
• Children should be fed in the “Mud Lab” and should not be allowed to walk around with food.
• Please be mindful of the instructor’s time. The presentation will start no later than 10 minutes after scheduled time if guests are late.
• There is no smoking permitted in the Interpretive Center and surrounding trails.

GO GREEN with a Zero Waste Party!
The Interpretive Center has reusable crab- and shell- themed plates and
cups for your use, free of charge. We encourage you to use reusable
or compostable plates, cups and tablecloths for your party. All food
waste and recyclables must be disposed of appropriately. We will
provide you with recycle bins and landfill trash receptacles. Recyclables, compostables and garbage must be properly separated. Ask the naturalist if you would like to use our reusable supplies.

Download these details for yourself with our Birthday Party Information Sheet.