What Does Seaweed Need to Live?


Seaweed is the foundation of life for the entire ocean and provides most of Earth's oxygen. Understanding how seaweed survives and grows is essential to protecting Earth's ecosystems.


  • The term "seaweed" is a general term used to describe a wide variety of non-vascular aquatic plants, or algae. Seaweed may be red, brown or green and ranges in size from microscopic plants to large plants with long fronds.


  • Like terrestrial plants, all types of seaweed use sunlight, carbon dioxide and water to create food. For this reason, seaweed must grow near the ocean's surface -- within the reach of sunlight -- to survive, and there must be an abundance of carbon dioxide in the water.


  • Like all living things, seaweed needs to stay hydrated to survive. As non-vascular plants, seaweeds lack the true leaves, stems, roots and internal vascular systems most other plants use to take in water, so they absorb it through the surface of their leaf and stem-like structures. For this reason, seaweed must constantly be partially or completely submerged.


  • Photo Credit Water and Seaweed image by Mr Shemp from Fotolia.com
Promoted By Zergnet


You May Also Like

  • How Long Does a Cheetah Live?

    The cheetah is a beautiful large cat with a spotted coat noted for its incredible bursts of speed. It is the fastest...

  • What Do Bacteria Need to Live?

    Bacteria are among the most diverse organisms on the planet. They are found in the widest range of habitats and vary extremely...

  • What is Seaweed Good for?

    Seaweed is algae from the sea, and it offers an abundance of nutritious benefits. All of the varieties of seaweed have long...

  • Facts About Seaweed

    Most plants cannot live in saltwater, since the water drowns their roots and the salt poisons their systems. Seaweed, however, is not...

  • How Does Seaweed Conduct Photosynthesis?

    "Seaweed" is actually a misnomer because the word "weed" implies that it is a plant. However, because it lacks the vascular system...

  • How Does an Ecosystem Survive?

    An ecosystem can be thought of as a community of plants and animals that live symbiotically. An ecosystem can be as immense...

  • How to Survive in the Ocean

    How to Survive in the Ocean. Being stranded in the ocean is probably not something we think of very often. We see...

  • How to Survive in the Desert

    A desert is any area that receives less than 250 millimeter (10 inches) of rainfall annually, and approximately 33 percent of the...

  • How to Eat Seaweed

    Humans have eaten seaweed since prehistoric times. The growing international popularity of Japanese cuisine has exposed people to this ancient food source...

  • What Are the Adaptations for Survival for Seagrass?

    Seagrasses are submerged flowering plants that live in shallow coastal waters. They play a vital role in preserving the biodiversity of sea...

Related Searches

Check It Out

How to Build and Grow a Salad Garden On Your Balcony

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!