Ocean Exploration: Building an Ocean Sensory Bin

Sensory bins are ‘what’s in’ right now, especially with teachers and parents who follow Montessori education. But if you want to take it one step further and create a bin your kiddo will love to no end, why not choose a fun theme? And if they love the sea, we have the perfect one for you.

Cute little boy playing with sand and water on the beach.

Ocean-themed sensory bins can bring the magic of the sea to life and give your little explorers a chance to dive deep into a world of textures, colors, and fascinating creatures. So why not set sail on a sensory voyage that will spark your child's curiosity and ignite their imagination?

Benefits of Ocean-Themed Sensory Play

Montessori sensory bins offer a lot of learning opportunities for your little explorers. These activities go far beyond just splashing and having fun, and they’re extremely beneficial for your child's development.


Let’s see how.

  • Sensory exploration: Ocean sensory bins engage all the senses, helping children explore the world around them in a rich and stimulating way.

  • Fine motor skills: Scooping sand, pouring water, and picking up tiny seashells all help develop those little hand muscles and improve hand-eye coordination.

  • Cognitive growth: Sensory bins encourage problem-solving, critical thinking, and creativity. Children can build underwater worlds, create stories about sea creatures, and explore concepts like sinking and floating.

  • Language skills: As children play, they naturally describe what they see and do, expanding their vocabulary and communication skills.

  • Creativity: Sensory bins are a canvas for imagination. Children can create underwater adventures, build coral reefs, or even pretend to be pirates searching for buried treasure.

But the benefits don't stop there. Ocean-themed sensory play also allows you to teach your little one about marine life and ecosystems while also fostering environmental awareness.

Materials Needed for Your Ocean Sensory Bin

There are a ton of things you can put in the ocean sensory bin, and most of them are going to be quite fun for your child to explore. So, let us show you some ideas.


Start with a base material like water with a few drops of blue food coloring, sand (regular or kinetic), or even dry beans or rice for a "dry" ocean floor.

Sea shells and rocks on a blue table.

Next, add some sensory elements to bring your ocean to life. Seashells of various shapes and sizes, smooth pebbles, sea glass, and coral will create a fascinating underwater landscape. And don't forget the toy sea creatures like fish, dolphins, whales, and sharks. You can also include some boats, submarines, and other nautical items to add an extra layer of fun and adventure.


Finally, include some tools for exploration. Scoops, shovels, and buckets are perfect for digging and building, while a magnifying glass allows for closer inspection of those tiny treasures. Tweezers or tongs can help develop fine motor skills, and small containers are great for sorting and collecting.


Just remember to always choose age-appropriate materials and to prioritize safety.

Practical Ideas

Let’s go over a few creative ideas to get those little imaginations swimming.

Underwater World

Fill your sensory bin with water or sand, then hide some treasures for your little explorer to discover. Seashells, smooth pebbles, and other small sea creatures can be buried within the sand or submerged in the water, creating a thrilling treasure hunt experience.

Little girl playing with a nature-themed sensory bin.

Provide scoops, shovels, and small containers for your child to dig, explore, and collect their findings. This activity encourages sensory exploration, develops fine motor skills, and sparks curiosity about the hidden wonders of the ocean.

Coral Reef Exploration

Use colorful sand or gravel to create a “coral reef” base, then add a variety of toy sea creatures that typically live around coral reefs. Starfish, sea urchins, sponges, octopuses, squid, crabs, shrimps, and even colorful sea slugs can all work.


Encourage your child to explore the different textures, colors, and shapes of the creatures and their habitat. They can create hiding places for the animals, build coral structures with colorful blocks or playdough, and even pretend to be marine biologists.


This activity sparks curiosity about marine life, promotes imaginative play, and introduces children to the importance of protecting these delicate underwater environments.

Beach Day Fun

For this type of sensory bonus, consider using kinetic sand or regular sand, as they are perfect for beach-like landscapes. Add some beach toys like buckets, shovels, rakes, and maybe even a few beach balls for a truly immersive experience.

Little girl playing with sand on a table and silicone molds.

This activity encourages creativity, fine motor skills development, and imaginative play. It's also a great way to introduce vocabulary related to the beach and ocean, like "seashore," "tide," and "waves." Plus, it's a fantastic option for those days when you can't make it to the actual beach.

Tide Pool Discovery

Create a miniature tide pool teeming with life by using a shallow container filled with water and arranging some rocks, pebbles, and maybe even a bit of seaweed. Then, add small sea creatures like snails, crabs, starfish, and small fish figurines.


Your little marine biologist will love exploring this miniature ecosystem, observing the creatures, and learning about their unique adaptations. They can even use tweezers or tongs to gently pick up the creatures and examine them closely.


This activity encourages observation skills, develops fine motor control, and fosters a love for the natural world.

Ocean Waves & Boats: A Nautical Adventure

Fill the bin with blue-tinted water, then add a variety of toy boats, ships, and sea creatures. Your little captains will love making waves, navigating their boats across the "ocean," and creating their own nautical stories.


This activity encourages imaginative play, develops fine motor skills, and introduces basic concepts like buoyancy and water displacement.

Setting Up Your Ocean Sensory Bin

Creating an ocean sensory bin is like setting the stage for an underwater adventure. Here's how to make it an engaging and enriching experience for your kid.

1. Selecting a Suitable Container

The container is, perhaps, the most important part of any covered sensory bin. So, let’s make sure to do this properly.

  • Pick the right size: Choose a container that's the right size for your child's age and the amount of space you have available, as well as the number of children who will be playing with it.

  • Materials matter: Plastic bins are a popular choice because they're lightweight, durable, and easy to clean. Metal bins can also work well, but make sure they're rust-proof and have smooth edges.

  • Easy-to-clean surfaces: Opt for a container with smooth surfaces that are easy to wipe down and disinfect.

  • Mess containment: Sensory play can get a bit wild! If you're concerned about spills, consider creating a covered sensory bin, a tray with raised edges, or even a shower curtain liner spread out on the floor for easy cleanup.
Toddler playing with wooden tracks in a plastic container.

2. Choosing Your Base Material

Next, the material that goes inside is what makes a sensory bin so fun and educational. Again, make sure that this part is done well.

  • Water works wonders: Water is a classic choice for ocean sensory bins, and you can add a few drops of blue food coloring for a more realistic ocean hue. You can also explore some ideas from the rice and water sensory bin; adding some rice into the ocean-themed bin can enhance the sensory element.

  • Sandy shores: Sand is another popular option, creating a beach-like environment for digging and building. Kinetic sand is a great alternative if you're concerned about mess, as it sticks to itself and is easier to clean up.

  • Dry options: If you prefer to avoid water or sand, rice and water or even dry beans and water can also create a fun and textured base for your ocean sensory bin. Shredded paper or fabric can add another layer of sensory exploration.

Remember that some children might love the feel of wet sand, while others might prefer dry textures. Offer a variety of options and let them explore at their own pace.

3. Adding Ocean-Inspired Objects

Now for the fun part - bringing your ocean to life! Here are a few ideas:

  • Natural treasures: Seashells, pebbles, sea glass, and coral create a realistic and engaging underwater theme.

  • Creature feature: Add toy sea creatures like fish, dolphins, whales, sharks, and other fascinating marine life.

  • Nautical adventures: Include toy boats, submarines, and other nautical items to encourage imaginative play and storytelling.

  • Repurposed fun: Get creative and use repurposed items like bottle caps for "fish" or blue tissue paper for "waves."

  • Sensory surprises: Add different textures with gel, foam, or water beads to create a multi-sensory experience.
Silicone sea stars and sea shells on a blue canvas.

Messy Play and Its Importance

Sensory play can be messy, but you shouldn’t let that discourage you. Messy play is incredibly valuable for your child's development.


Yes, cleaning up afterward might take a bit of effort, but the benefits far outweigh the hassle. Messy play encourages creativity, problem-solving, and fine motor development. It helps children learn about different textures, temperatures, and properties of materials.


If you want to make messy play more manageable, you can take the play outside and set up a sensory table on nice days or maybe create a designated play area in which you’ll contain the mess.

Child playing with sparkling silicone tube and creating designs on a yellow hammer.

Adapting the Sensory Bin for Different Ages

Sensory bins can be enjoyed by children of all ages, but it's important to tailor the experience to their developmental stage and interests:

Toddlers (1-3 years old):

  • Keep it simple! Focus on large, easy-to-grasp objects and basic concepts like colors and shapes.
  • Prioritize safety with non-toxic materials and close supervision.
  • Encourage exploration with scoops, buckets, and simple tools.
  • Introduce basic vocabulary related to the ocean and sea creatures.

Preschoolers (3-5 years old):

  • Add more complex elements like miniature boats, coral reefs, and a variety of sea creatures.
  • Encourage imaginative play and storytelling.
  • Introduce early STEM concepts like sinking and floating, water displacement, and buoyancy.
  • Provide opportunities for sorting, counting, and categorizing objects.

Older Kids (5+ years old):

  • Create themed challenges like treasure hunts or "rescue missions" to engage their problem-solving skills.
  • Encourage research and learning about real sea creatures and ocean habitats.
  • Incorporate art projects, creative writing, or even science experiments related to the ocean theme.

Conclusion:

These sensory bins offer a great way to introduce your little ones to the wonders of the underwater world. With a good ocean-themed sensory bin, you're providing a rich and stimulating environment for your child to explore and learn.


So, pull up your sleeves and create your own ocean sensory bin. Share your creations and experiences in the comments below, and be sure to subscribe for more inspiring sensory play ideas.

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