macroalgae
Visible aquatic plants
Macroalgae are large, visible algae that grow in marine and freshwater environments, commonly known as seaweed or kelp.
Unlike microalgae, which are microscopic single-celled organisms, macroalgae are multicellular and can range from a few centimeters to over fifty meters in length.
They attach to rocks, coral, or other substrates and are classified into three main groups based on pigmentation: green, brown, and red algae.
The coastline was thick with macroalgae after the storm.
Large brown marine algae
- sargassumPelagic brown algae
- noriDried edible seaweed sheets
- dulseEdible red seaweed
- wakameEdible brown algae
bladderwrack · rockweed · kombu · sea lettuce · wrack
Dried edible seaweed sheets
- wakameEdible brown algae
- kombuEdible Japanese seaweed
- dulseEdible red seaweed
- sea lettuceEdible green marine algae
sushi · dashi · seaweed salad · sea vegetables · umami · edible · harvesting · aquaculture
Light-harvesting plant pigment
- photosynthesisLight-to-sugar conversion in plants
- carotenoidsFat-soluble plant pigments
- thallusUndifferentiated vegetative body
- gametophyteHaploid reproductive generation
reproduction · spores · cell wall · agar · biomass · carbon sequestration
Zone between high and low watermarks
- subtidalPermanently below waterline
- benthicOf the sea bottom
- tide poolsSeawater pockets in rocks
- coastalOf the shoreline
reef · rocky shore · seabed · estuary · littoral · holdfast · frond · blade
Seaweed-derived gelling agent
- agarAlgae-derived gelling substance
- biofuelFuel from organic sources
- fertilizerSoil nutrient supplement
- cosmeticsSkin-applied beauty substances
pharmaceuticals · hydrocolloids · extraction · cultivation · seaweed farming · biorefinery · thickener · emulsifier
kelp
Large brown marine algae
wakame · bladderwrack · rockweed · kombu · sea lettuce · wrack
nori
Dried edible seaweed sheets
sea lettuce · sushi · dashi · seaweed salad · sea vegetables · umami · edible · harvesting · aquaculture · mariculture
chlorophyll
Light-harvesting plant pigment
- photosynthesisLight-to-sugar conversion in plants
- carotenoidsFat-soluble plant pigments
- thallusUndifferentiated vegetative body
gametophyte · reproduction · spores · cell wall · agar · biomass · carbon sequestration
intertidal
Zone between high and low watermarks
- subtidalPermanently below waterline
- benthicOf the sea bottom
- tide poolsSeawater pockets in rocks
coastal · reef · rocky shore · seabed · estuary · littoral · holdfast · frond · blade · stipe
alginate
Seaweed-derived gelling agent
- agarAlgae-derived gelling substance
- biofuelFuel from organic sources
- fertilizerSoil nutrient supplement
cosmetics · pharmaceuticals · hydrocolloids · extraction · cultivation · seaweed farming · biorefinery · thickener · emulsifier · bioplastics
- algaechlorella, kelp, seaweed, chlamydomonas, seaweeds
- kelp forestkelp, giant kelp, bull kelp, holdfast, holdfasts
- sea plantskelp, seagrass, eelgrass, sea lettuce, dulse
- seaweedkelp, nori, wakame, kombu, dulse
- Algaculturemicroalgae, seaweed farming, spirulina, chlorella, bioreactor
- aquatic algaemicroalgae, kelp, diatoms, cyanobacteria, phytoplankton
macroalgaemicroalgae
Microscopic aquatic photosynthetic organisms
phytoplankton · plankton · diatoms · cyanobacteria · blue-green algae
macroalgaesingle-celled organisms
Organisms lacking multicellularity
unicellular organisms · microorganisms · protists · bacteria