Dive Into Discovery: A DIY Marine Biology Project for Preschoolers

Decorative Wave


Summer is a fantastic time to explore new activities with your little ones, especially those that stir curiosity and foster learning. If you’re looking for a fun and educational project to engage your preschooler, why not explore the fascinating world of marine biology together? 

This simple DIY Marine Biology Project is perfect for young learners and can be done right at home. Let’s dive into the details and get started

Materials Needed

To kick off your marine biology adventure, you’ll need a few basic materials that are either already at home or easy to find at a local store:

✅ Clear plastic container (large)

✅ Blue food coloring

✅ Various small plastic ocean animal toys



✅ Small net for scooping

✅Magnifying glass

✅Pictures or illustrations of marine life

Step-by-Step Guide

1. Create Your Ocean: Fill the plastic container about halfway with water and add a few drops of blue food coloring. Mix well to create your ‘ocean’. This is a great time to talk about why the ocean appears blue and discuss its vastness and depth.

2. Add Marine Life: Place the plastic ocean animals into the container. You can use fish, turtles, sharks, or any marine creatures your child is interested in. This is an excellent opportunity to name each animal and talk a little about their habitats and behaviors.

3. Explore the Seafloor: Mix sand and shells and add them to the bottom of your container to represent the seafloor. Discuss the types of creatures that live on or in the ocean floor, such as crabs and various shellfish.

4. Observation Time: Use the magnifying glass to explore the details of different animals and seashells. Encourage your child to describe what they see and ask questions about the marine environment.

5. Fish for Facts: Use the small net to let your child ‘catch’ an animal. Once they pick one, have them tell you a fact about it. You can prepare a small fact sheet beforehand to help them learn more about each creature.

Learning Outcomes

This DIY project not only entertains but educates, introducing preschoolers to basic concepts of marine biology, including:

– Understanding different marine species

– Learning about habitats within the ocean ecosystem

– Developing observational and motor skills through interactive play


With this DIY Marine Biology Project, you can turn your home into a mini-oceanographic institute! It’s a perfect summer activity that is both fun and educational, providing your child with a deeper understanding of the world’s oceans and the creatures that inhabit them. 

So grab your materials and prepare to embark on an underwater adventure that your little one will remember for a lifetime!

Here is to more fun:

Ready to dive deeper into summer fun and learning? Enroll your child in Arbor View Montessori’s Summer Program today and discover a sea of possibilities! 

Our summer activities are designed to nurture curiosity and foster an enduring love of learning. Visit our website or contact us to secure your child’s spot for a summer filled with exploration and discovery. 

Join the Arbor View family this summer and watch your little explorer thrive!