Big Question

Why are oceans so important to life on Earth?

Introduction to Oceans

The ocean covers more than 70% of our planet and plays a vital role in sustaining life on Earth. It helps regulate climate, produces much of the oxygen we breathe, and is home to an incredible variety of living things—from microscopic plankton to massive whales.

Oceans are constantly moving through waves and currents, shaping coastlines and connecting ecosystems across the globe. Beneath the surface, there are layers of depth—from sunlit waters filled with life to dark, mysterious zones where only specially adapted creatures can survive.

Understanding the ocean helps students explore science, geography, environmental responsibility, and the interconnectedness of our world.

Ocean Animals & Habitats

The ocean is made up of diverse habitats, each supporting different kinds of life:

• Coral Reefs – Bright ecosystems full of fish and sea creatures

• Open Ocean – Home to large animals like whales and sharks

• Deep Sea – Dark, high-pressure zones with glowing organisms

• Coastal Areas – Where land and sea interact

👉 Fun Fact: Some deep-sea animals create their own light through bioluminescence!

Hands-On Ocean Activities

Saltwater Experiment (K–2)

www.weareteachers.com

C'mon in ... the water's fine!

👉 Explore how salt changes water density and helps objects float.

🌊 Ocean Zones Jar (3–5)

www.pbs.org

Make an Ocean Zones jar to see the ocean layers and learn about liquid density.

https://www.learningresources.com/blog/diy-ocean-layers/

👉 Build layered ocean zones and explore how light and depth affect life underwater.

🧪 Ocean Pollution Challenge (6–8)

www.steampoweredfamily.com

Learn about the impact oil spills have on the marine ecosystem, then get hands on with an oil spill cleanup experiment for the science fair.

👉 Test different oil spill cleanup methods and think like an environmental scientist.

Epic Books Collection

www.getepic.com

View the Oceans collection on Epic plus over 40,000 of the best books & videos for kids.

👉 Loads of ebooks on Oceans!

Dive Into Ocean Simulations

🚢 Virtual Submarine Explorer (K–8)

https://www.coexploration.org/oe/kws/👉 Explore shipwrecks, deep-sea vents, and ocean life like a real explorer.

🐠 Coral Reef Ecosystem Builder (3–8)

https://smithsonianeducation.org/interactives/secretsofthesea/index.html

👉 Build a balanced ecosystem and see what happens when things change.

🌍 Ocean Currents Simulation (3–8)

https://spaceplace.nasa.gov/ocean-currents/👉 Control temperature and salinity to see how ocean currents move.

🌊 Ocean Data Lab (6–8)

https://ovl.oceandatalab.com/

👉 Explore real ocean data like scientists.

🐙 Deep Sea Exploration (3–8)

https://www.whoi.edu/ocean-at-home/

👉 Discover extreme ocean environments and unique creatures.

Ocean Learning Videos

🌊 Intro to Oceans (K–5)

👉 A simple, engaging overview of the five oceans and what makes each unique—perfect for younger learners.

🌊 Ocean Facts & Creatures (K–5)

👉 Fun, fast-paced facts about ocean animals and features—great for sparking curiosity.

🌊 Waves & Ocean Movement (K–5)

👉 Explains how waves work and why they happen, connecting perfectly to your ocean science section.

🌊 Ocean Zones (3–8)

👉 Helps students visualize sunlight, depth, and different ocean layers, which ties directly to your “Ocean Zones Jar” activity.

🌊 Deep Sea Exploration (3–8)

👉 Explores the Mariana Trench and extreme ocean environments, showing how creatures survive in harsh conditions.

Full Ocean Overview (3–8)

Oceans: What’s Under the Surface? (PBS)

👉 A slightly more in-depth video covering ecosystems, ocean importance, and marine life—great for upper elementary and middle school.

Live Webcam Videos

👉 Watch rescued otters play, eat, and interact—huge engagement for younger kids

👉 Watch sharks, rays, and fish gliding through a reef habitat—great for predator/prey discussions.

👉 You’ll see tuna, sharks, rays, and sea turtles swimming in a massive open-ocean tank.

👉 A relaxing, almost hypnotic look at jellyfish movement and behavior.