### microalga:

Seaweed
* All seaweeds are from Hawaii's waters.
* Many seaweeds absorb most of the spectrum and look almost black
  - grow rapidly and can potentially outcom- pete and overgrow corals
  - have chemical defenses
* Most seaweed contains chlorophyll
* Most seaweed finds in australian coastal water
  - blue water
* Most seaweed finds in clear blue water
  - ocean water
* Most seaweed finds in shallow ocean water
* Most seaweed grows in clear crystal water
  - has health benefits
* Most seaweed has many health benefits
  - healthy properties
  - nutrition
  - several other health benefits
  - includes kelp
  - is medium-sized and they are available in multiple colors like red, brown, and green
* Most seaweed looks like plants
  - underwater plants
  - produces food
* Some seaweed contains arsenic
  - nitrogen
  - potassium
  - substances
  - does have gametes, which are male and female reproductive cells
  - finds in food
* Some seaweed has flexible stalks
  - ranges
  - roots
  - is intertidal and receives a beating from the constant waves
  - kills clams
  - seaweeds also occupy spaces amongst the animals, and turf algae are particularly abundant here
* Some seaweeds are as large and complex as many plants
  - perennial, living for many years, while are annuals
  - cunningly produce cells which can be either sexual or asexual
* Some seaweeds have gas-filled swellings on their fronds
  - pneumatocysts as large as baseballs
  - make new plants using stolon-like runners similar to strawberries
* absorb their nutrients through their leaf-like tissues.
* also have many industrial uses
  - produce oxygen for organisms both on land and in the ocean
  - tend to be very high in iodine, which can cause problems at high intakes
  - vary in their life history strategies
* are algae that liven in the sea or in brackish water
  - also oceanic producers
  - associated with water life and food
  - classified as brown algae, red algae, and green algae
  - common on some Pacific reefs
  - found throughout the world's oceans and seas and none is known to be poisonous
  - large ocean plants called algae
  - main photosynthesizers and use holdfasts to anchor
  - members of a large group called algae
  - mineral rich and help promote vaginal elasticity
  - plants, too, and use the same things to grow
  - rich in many trace elements as well
  - simple organisms that are hard to understand
  - slippery
  - sources of food, fiber, unique chemicals and essential habitat for many organisms
* are the best-known algae
  - most conspicuous inhabitants, especially on flat or gently sloping bottoms
  - used in many maritime regions for industrial applications and as a fertiliser
  - usually green, brown, or red
  - vascular plants
* belong to the brown, red, and green algae groups.
* can also reproduce asexually through fragmentation or division.
* can, however, also provide a refuge for or from predators.
* collect so thickly in depressions that turtles actually can lie down in the stuff.
* contain cellulose and are classified as plants
  - small amounts of nitrogen, phosphorus, and potassium
* continue in wide use as fertilizers.
* cover a large part of the bottom and provide forage for juvenile turtles.
* do have some very specific characteristics.
* generally grow less and their shapes change in sheltered environments.
* give energy and strength to the body, protect, disinfect and free body from toxins.
* growing on rocks can be dangerously slippery.
* has benefits
* has many benefits
  - other benefits
* has several other benefits
* have a growing role as biological indicators of ecosystem stress
  - complex life cycles involving both sexual and asexual stages
  - remarkably rich absorption spectra
* includes cell membranes
  - sections
* is edibles.
* is located in beachs
  - marine organisms
  - part of oceans
* knows as giant kelp
* lack the true leaves, stems, and roots of plants.
* occupy a wide range of ecological niches.
* often compete by over- growing each other, blocking the light.
* play a very important roles in many marine communities
  - an important role in many coastal environ- ments
* produce several types of gelatinous chemicals called phycocolloids.
* provide food for such grazers as snails, sea hares and urchins.
* shares no diseases with land plants.
* use their holdfasts or simply encmst on rocks.
+ Seaweed, Ecology: Algae
  * 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.