What is seaweed? | Seaweed Part 1
Seaweed are photosynthetic organisms that live in an aquatic environment and lack the more complex structures that plants have. They are sometimes referred to as macroalgae and non-vascular plants. Seaweed plays an important role in the shallow water ecosystems they inhabitant because they are primary producers. They are three main groups of seaweed that are defined by their photosynthetic pigments they possess in addition to chlorophyll. They are the green, red and brown seaweeds. The body or thallus of seaweeds can include structures such as the stipe, the holdfast, blades and pneumatocysts.
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For more information check out the sources used to make this video:
Sept DJ. 2008. A Photographic guide to Seashore Life in the North Atlantic: Canada to Cape Cod. Princeton University Press. Princeton, New Jersey, USA. pp 148-172
Townsend, D.W. 2012. Oceanography and Marine Biology: An introduction to Marine Science. Sinauer Associates, Inc. Sunderland, Massachusets, USA. pp 286-291