intertidal

Shore zone habitat

Intertidal describes the coastal zone between high and low tide marks—the area alternately submerged and exposed as tides rise and fall.

Intertidal ecosystems host organisms adapted to this fluctuating environment: We explored the intertidal zone, finding sea stars and anemones in the tide pools.

The term appears primarily in marine biology and ecology.

coastal

shoreline

Land-water boundary

beach · rocky shore · estuary · brackish · mangrove · delta · lagoon · inlet · cove · headland

ecology

zonation

Arrangement in distinct zones

grazing · keystone · trophic · foodweb · detritus · recruitment · settlement · larval · disturbance · recovery

organisms

barnacles

Shell-armored marine clingers

limpets · chitons · periwinkles · urchins · crabs · snails · nudibranchs · sponges · oysters · clams

algae

seaweed

Saltwater aquatic plants

coralline · wrack · dulse · nori · surfgrass · eelgrass · phytoplankton · diatoms · cyanobacteria · chlorophyta

cycles

semidiurnal

Twice in one day

flood · ebb · lunar · submersion · emersion · desiccation · rehydration · rhythm · periodicity · timing

stressors

surge

Sudden powerful increase

salinity · predation · competition · trampling · pollution · invasives · acidification · hypoxia · ultraviolet

adaptation

desiccation

Complete removal of moisture

operculum · mucus · clustering · air-breathing · anaerobic · plasticity · hardiness

habitat

tidepool

Coastal rock hollow holding seawater

oysterbed · cobblestone · crevice · overhang · microhabitat · substrate · attachment · holdfast · refuge · shelter

zonation

lowtide

Ocean at minimum level

submersion · emersion · gradient · elevation · distribution

research

transect

Observation path for surveys

sampling · tagging · census · mapping · baseline · sentinel · citizen science · fieldwork

Categories
Opposites
marine depth/zone

intertidalsubtidal

Permanently below waterline

deep-sea · abyssal · deep sea · deep-water · pelagic

water exposure

intertidalterrestrial

Relating to land

landlocked · upland · dry land · high ground · splash zone

Phrases
Family

tide, tides, tidal, tided, tidewater, tidemark, tideless, tideland, tidelands

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