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Sea

Adapted from Wikipedia · Explorer experience

A beautiful beach scene at Praia da Marinha in Algarve, Portugal, showing cliffs and the ocean.

The Wonderful World of the Sea

The sea is a big place full of salty water. It covers most of our planet and is home to many amazing creatures. Some people call it the ocean, which is all the seas together. Smaller parts of the ocean are also called seas, like the Mediterranean Sea.

The sea is full of life! From tiny bacteria and algae to big animals like whales, the sea has many different kinds of plants and animals. They live in special places called marine habitats, such as coral reefs and kelp forests.

The sea helps control our planet's climate. It moves water and air around, which keeps temperatures just right for us. The pull of the Moon and the Sun makes the sea levels go up and down in something called tides.

People have always loved the sea. It gives us food like fish and shellfish. Long ago, people used the sea for trade and to travel to new places. Today, we enjoy fun activities like swimming, sailing, and scuba diving in the sea.

The sea is very important to our world. It helps keep our planet healthy and gives us many wonderful things. Next time you visit the beach, remember all the amazing life hiding just below the waves!

Images

A satellite view of the Mediterranean Sea showing its coastal borders and surrounding landmasses.
A stunning view of our planet Earth from space, showing continents and clouds as captured by NASA satellites.
NASA's first global map showing how salty different parts of the world's oceans are, using colors to indicate salinity levels.
Map showing the major ocean currents and gyres of the world.
Map showing the pattern of ocean currents that help circulate water and oxygen around the world's oceans.
Diagram showing how tides are caused by the gravitational pull of the moon and sun.
A diagram showing different types of tectonic plate boundaries, helping us understand how Earth's plates move and interact.
A stunning view of Pink Beach on Budelli Island in Sardinia, famous for its beautiful pink sand and crystal-clear waters.
A beautiful blue starfish resting on colorful coral reefs in the Great Barrier Reef, surrounded by marine life.
A Thornback Cowfish, a colorful marine fish with large spines near its eyes, swimming in warm tropical waters around Bali, Indonesia.

This article is a child-friendly adaptation of the Wikipedia article on Sea, available under CC BY-SA 4.0.

Images from Wikimedia Commons. Tap any image to view credits and license.