Understanding What Algae Is
Algae are simple, plant-like organisms that live in water. They can be tiny and microscopic or large like seaweed. Algae make their own food using sunlight.
Where Algae Are Found
They grow in oceans, lakes, rivers, ponds, and even damp soil. Anywhere there is moisture and sunlight, algae can survive.
Types of Algae
Green algae: Common in freshwater and some oceans.
Brown algae: Includes kelp, which can grow very large.
Red algae: Often found in deep ocean waters.
Blue-green algae: Actually bacteria (cyanobacteria) that photosynthesize.
How Algae Make Food
Algae use sunlight, water, and carbon dioxide to produce their own energy through photosynthesis. This process releases oxygen into the environment.
Why Algae Matter
Algae produce much of the Earth’s oxygen and form the base of many aquatic food chains. They support fish, shellfish, and countless other organisms.
The Good and the Bad
Most algae are helpful, but some can grow too quickly and create “algal blooms,” which reduce oxygen in water and harm wildlife.
The Simple Takeaway
Algae are plant-like organisms that live in water and make their own food with sunlight. They are essential for oxygen production and aquatic life.