Skip to main content
subtidal

subtidal

7.5
Located below the low tide line and always underwater
  • adjective
  • /ˌsʌbˈtaɪdəl/
  • Specialized
translation icon : submareal
  • Herring spawn in shallow subtidal zones, with most egg deposition from 0 to minus 10 feet in tidal range (Bargmann, 1998).
  • intertidal and subtidal
  • shallow subtidal

Examples

  • In the subtidal Thalassia testudinum, pollen is released within an hour of dusk, possibly to escape grazing by parrotfish (van Tussenbroek et al. 2008).

    Academic text (2012)
  • Examples from marine intertidal and subtidal communities document the importance of species redundancy and complementarity in resistance and recovery, and they also show why recovery potential and resistance can differ from place to place within the same ecosystem.

    Academic text (2008)
  • Except for small soft clamming areas along narrow shorelines, all others were subtidal.

    Academic text (1990)
  • Subtidal sea urchin population surveys have been conducted at various locations along the west coast, usually in commercial sea urchin fishing zones.

    Academic text (1997)
  • Therefore, conch are found in well-lighted regions of the marine environment from the shallowest subtidal zone down to depths of about 35-40 m in clear Caribbean water.

    Academic text (1997)
  • The marine biologist studied the diverse life forms present in the subtidal region of the ocean.

  • Fish such as flounder often inhabit subtidal zones where they are sheltered from strong currents.

  • The subtidal environment supports various species of seaweed that thrive beneath the waves.

Synonyms

underwater
vssubtidal
161 1.0

Below the surface of water where plants and animals live

narrows this to areas always below the low tide mark
undersea
vssubtidal
16 4.1

A thing that is under the surface of the sea

is narrower, meaning specifically below the low tide line on the shore
subaquatic
vssubtidal
1 7.6

Living or growing under the surface of water

emphasizes being continuously below the low tide mark in the sea
sublittoral
vssubtidal
  • Specialized
9.9

Shallow sea area just offshore where light reaches the bottom and plants and animals live

is specifically about areas always below the low tide mark
submersed
vssubtidal
7.0

A plant or thing that is completely under water

is focused on being always below the low tide line rather than any underwater place
submerged
vssubtidal
4.2

Completely under the surface of water

is about locations permanently below the low tide mark rather than temporary submersion
subaqueous
vssubtidal
9.9

Existing or happening under water

is limited to marine areas always below the low tide line not all underwater places
submarine
vssubtidal
4.9

Under the surface of the sea

refers instead to natural locations permanently below the low tide mark
subsea
vssubtidal
  • Specialized
5.2

Under the sea, used for building pipelines or laying cables

is about natural sea areas that are always below the low tide line

Antonyms

intertidal
  • Specialized
1 6.9

Part of the shore that is underwater at high tide and dry at low tide

How Deep

deep sea
6 3.6
continental shelf
  • Specialized
4 5.5
subtidal
  • Specialized
7.5
intertidal
  • Specialized
1 6.9

Surface Forms

subtidal positive

Morphology

subtidal = tidal (transparent) = sub + tidal

The meaning is clearly derived from 'sub-' meaning 'below' and 'tidal', indicating a location below the tidal zone.

Etymology

The word subtidal comes from sub- 'under' and tide 'the rise and fall of the sea'. As an adjective, subtidal describes places below the low-tide mark that are always underwater.