Microalgae
* Algae begin grow within a matter of days when a wave of nutrients fills the Bay
  - begins to grow as soon as the water temperature in the pond rises
  - being simple, there are no specialised organs and cells
  - blocks sunlight, making it difficult for other harbor plants to grow
  - cause unsafe water turbidity and stain the pool shell
  - coats almost everything, from live coral to rubble on the reef crest
* Algae come in a variety of shapes and forms
  - three forms, unicellular, multicellular and colonial
  - compete with salmon for oxygen
* Algae contain chlorophyll but lack true stems, roots, leaves, and vascular tissue
  - the green pigment chlorophyll which absorbs and converts sunlight into energy
  - create oxygen atmosphere
  - depend on sunlight and pond water
  - differs from plants in their sex organs
  - eat nothing
  - encompasses a large group of organisms
  - exist in a wide variety of colors because they contain many kinds of pigments
  - feed the animals that make coral
  - form the foundation of most aquatic food webs, which support an abundance of animals
  - forms the broad base on which the food pyramids in ponds and lakes is built
  - get protection from ultraviolet light , which in some environments is quite significant
* Algae grows because of an overload of available nutrients in the aquasystem
  - best in water with too much fish waste
* Algae grows in areas where circulation is poor
  - dense, fibrous mats that can plug the distribution trays or piping
  - on rock boulders in intertidal zone
* Algae grows on the roughened carapace, causing it to look like an old, encrusted rock
  - turtle
  - helps manatees camouflage, or hide, in their environment
* Algae includes cell membranes
  - corpi
  - cytoplasm
  - nuclei
  - plasma membranes
  - is aquatic organisms
* Algae is located in swimming pools
  - waterfalls
* Algae lack true leaves, stems, and roots
  - roots, stems, leaves, and flowers
  - live in fresh and salt water, in soil, sand and even snow
* Algae live in the cells of individual coral polyps and process their waste
  - outer tissue of the coral
  - inside corals
  - microorganism
* Algae often forms surface mats
  - show alternation of generations
  - produce oxygen but also fill the pond with organic material as they die
* Algae produce oxygen during sunlight hours and use oxygen during the night hours
  - the day through photosynthesis
  - oxygen, which is essential for bacteria to make the lagoon function properly
  - photosynthetic nutrients an receive inorganic nutrients
  - provide growth stimulation of legionella through substances produces by the algae
  - quickly overgrow the skeleton
  - releases oxygen into the water as it manufactures it food
  - serve as a source of food for fishes, aquatic and terrestrial animals and human beings
  - settles to the bottom
  - spreads quickly in warm, stagnant water
  - tend to be unicellular
* Algae use ammonia readily when sunlight is available
  - carbon dioxide and water to make sugars and oxygen
* Algae use the nutrients to grow
  - sun's energy, carbon dioxide and water to produce sugars to use for energy
* Algae vary from small, single-celled species to complex multicellular species, such as seaweeds
  - greatly in size and grow in many diverse habitats
* All algae can reproduce asexually, but sexual reproduction can also occur in some species
* All algae contain chlorophyll and live in the water
  - has mucilaginous sheath around it
  - have roots, stems, and leaves
* Many algae are cryptic for one significant reason, to avoid being eaten
  - single celled, however some species are multicellular
  - toxic to animals and humans
  - incorporate both sexual and asexual modes of reproduction
  - produce special cells called spores that are capable of growing into new individuals
* Most algae are able to make energy from sunlight, like plants do
  - use the sun's energy to make their own food
  - harmless and are an important part of the food web
* Most algae have no such specialization of cells, all cells are alike
  - two recognisable phases - the sporophyte and the gametophyte
  - is carried into the lakes by wind blown soil
  - live off sunlight through photosynthesis, but some live off organic matter like bacteria
* Some algae also inhabit shoreline zones
  - produce toxins harmful to fish, wildlife and humans
* Some algae are a source of antibiotics
  - chemoheterotrophs
  - found as coloured patches on areas of permanent snow
  - parasites, living in or on another organism from which they get their food
  - protists , if they are single-celled
  - single cell plants
  - symbiotic, living on or within animals, fungi or other plants and some are parasitic
  - unicellular and are therefore found among the protists
* Some algae are unicellular while others are multicellular
  - some others are multi-cellular
* Some algae can calcify, secreting skeletons composed of calcium carbonate
  - grow on rocks, soil or vegetation as long as there is enough moisture
  - produce hydrocarbons
  - develop in the form of blooms
  - grow in colonies resembling plants
* Some algae have chloroplasts resulting form a endosymbiosis of a photosynthetic eukaryote
  - specialized pigments that absorbs the other colors of light
  - produces toxins
+ Lichen, Their life habit, Mutual benefits: Fungi :: Botany :: Bacteria :: Algae :: Extremophiles
  * There is also general mechanical protection. Algae get protection from ultraviolet light, which in some environments is quite significant. Probably, algae get access to the minute amounts of minerals, which the fungus gets from the substrate or from dust settling on the thallus. Algal cells are sometimes destroyed in the course of nutrient exchange, though the algal cells divide and replace them. Above all, the partnership is a resounding success, and gets to places where few other plants can survive.
+ Protist: Cell biology
  * Most protists are very small. Some algae are protists, if they are single-celled. Many protists are part of the plankton and are very important for the ecosystem. The cells found in protists may be extremely complex, and are often little understood. It is now possible to do DNA sequencing, and a number of protists have been analysed. The results show that the Protista is not a monophyletic group. It is paraphyletic, and not a single clade.