Why Are Polar Seas Busy in Summer and Quiet in Winter?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why are polar seas busy in summer and quiet in winter?

The Big Idea

Polar seas are busy in summer and quiet in winter because the Sun brings the food! In summer, nearly nonstop sunshine makes plankton bloom. In winter, there is little light, so the party slows down. Let's take a look!

Summer Blooms

Step one: a busy summer. In summer, the nearly nonstop sunshine and nutrient-rich water cause plankton blooms. These blooms feed everything else, from tiny animals up to whales.

Dark Winter

Step two: a quiet winter. In winter, there is little light, so plankton nearly stop growing. Food becomes much harder to find, and the sea grows still and quiet.

Many Ways to Cope

Step three: coping with winter. Many animals move away, sleep deep in the sea, or live off their stored fat. Then spring brings back the party.

A Closer Look

Let's take a closer look! Summer brings long, sunny days, almost without night. Plankton bloom and feed everyone. Winter brings long darkness. Many animals leave or rest until spring, and wait for the Sun to return.

Quick Facts

Quick facts! Plankton blooms can be bigger than some countries when seen from space. Satellites can see them as swirls of green and blue. Scientists use these pictures to learn how healthy the ocean is, and how much life it holds. Look at satellite pictures online with a grown-up.

Think Like a Scientist

Now, think like a scientist! Draw a year-long wheel of plankton growth. Make it small in winter and big in summer. Add animals that visit in each season. Share what you discover with a grown-up.

Outro

Polar seas follow the Sun, busy in summer and quiet in winter. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!