sandbanks
Submerged sand ridges
Sandbanks are ridges or mounds of sand formed by water currents or waves, typically found in rivers, estuaries, or shallow coastal waters.
They can shift with changing conditions and pose hazards to navigation: The boat ran aground on a sandbank.
At low tide, sandbanks may become exposed, creating temporary islands.
Wind-formed sand ridges
- shoalsUndersea areas near surface
- barrierObstruction preventing passage
- tidalOf sea rhythms
- shorelineLand-water boundary
estuary · inlet · cove · bay · delta · lagoon · littoral · seashore
Waterborne earth particles
- gravelLoose small rock fragments
- depositsMaterial settled or stored
- alluviumWater-deposited loose sediment
- particlesMinute pieces of matter
layers · fluvial · accumulation · erosion · deposition · shifting · dredging · minerals
Source of potential harm
- shoalingWater becoming less deep
- groundingConnecting to earth
- channelsPaths for transmission
- markersPens with porous tips
buoys · charts · pilots · depth · soundings · dredging · shipping · vessels
Catching aquatic creatures
- swimmingLocomotion through water
- wadingTraversing shallow water on foot
- beachcombingSearching shores for flotsam
- picnicsOutdoor meals, often social
sunbathing · kayaking · boating · clamming · exploration · paddling · surfcasting · birdwatching
dunes
Wind-formed sand ridges
shoreline · estuary · inlet · cove · bay · delta · lagoon · littoral · seashore · reef
silt
Waterborne earth particles
- gravelLoose small rock fragments
- depositsMaterial settled or stored
- alluviumWater-deposited loose sediment
particles · layers · fluvial · accumulation · erosion · deposition · shifting · dredging · minerals · clay
hazard
Source of potential harm
markers · buoys · charts · pilots · depth · soundings · dredging · shipping · vessels · stranding
fishing
Catching aquatic creatures
- swimmingLocomotion through water
- wadingTraversing shallow water on foot
- beachcombingSearching shores for flotsam
picnics · sunbathing · kayaking · boating · clamming · exploration · paddling · surfcasting · birdwatching · photography
seals
Aquatic whiskered mammals
- nestingMaking a dwelling
- shorebirdsCoastal avian foragers
- coloniesTerritories under foreign control
basking · habitat · breeding · terns · waders · crabs · shellfish · ecosystem · sanctuary · migration
- coastscliffs, shoreline, coves, bays, rocky shore
- tropical islandsatolls, coral islands, volcanic islands, lagoons, reefs
- coastal habitatsshoreline, shorelines, tidal flat, coastline, mudflat
- navigation obstructionssandbars, reefs, rocks, shoals, wrecks
- North Seaoffshore drilling, oil platforms, oil platform, offshore wind farms, wind farms
- river deltasNile Delta, Mississippi Delta, Ganges Delta, Mekong Delta, distributary
sandbanksbedrock
Solid stone underground
solid rock · reef · hardpan · rocky outcrops · rocky outcrop
sandbanksdeep water
Significantly submerged aquatic zone
shipping lanes · ocean depths · the deep · open water · main channel
sandbanksdeep water
Significantly submerged aquatic zone
shipping channel · open water · trench · sea lane · fairway