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Seaweed Meaning and Definition in Dictionary

Definitions from Wordnet 2.0

  • plant growing in the sea, especially marine algae

Definitions from Wiktionary

  • plant growing in the sea, especially marine algae

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Seaweed Meaning and Definition in Wikipedia

Seaweed is a term used for several forms of multicellular marine algae. Red algae, Green algae and Brown algae are commonly considered to be seaweed. Seaweed gets its energy from photosynthesis. Because it looks very different from other plants, seaweed is usually not considered to be a plant.

Two specific environmental requirements dominate seaweed ecology. These are the presence of seawater (or at least brackish water) and the presence of enough light for photosynthesis. Often, a firm attachment point is also needed.

For this reason, seaweeds can be found in the littoral zone of the sea. Within that zone, they are more frequent on a rocky shore, than on sand.

Another common requirement is a firm attachment point. As a result, seaweeds most commonly inhabit the littoral zone and within that zone more frequently on rocky shores than on sand or shingle. Seaweeds occupy a wide range of ecological niches. The highest elevation is only wetted by the tops of sea spray, the lowest is several meters deep. In some areas, littoral seaweeds can extend several miles out to sea. The limiting factor in such cases is sunlight availability. The deepest living seaweeds are the various kelps.

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'Seaweed' example sentence in quotations

* The wise man can pick up a grain of sand and envision a whole universe. But the stupid man will just lie down on some seaweed and roll around until he's completely draped in it. Then he'll stand up and go, 'Hey, I'm Vine Man.' - Jack Handey Deep Thoughts

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