sandbank
Submerged river hazard
A sandbank is a ridge or mound of sand formed by currents in a river, sea, or ocean.
Sandbanks often rise near the water's surface, creating hazards for boats: The ship ran aground on a sandbank.
At low tide, sandbanks may become exposed, forming temporary islands where seals or birds gather.
Stuck on seafloor
- strandedLeft without means to leave
- hazardSource of potential harm
- channelPassage for transmission
- shipwreckDestroyed vessel at sea
grounding · buoy · marker · chart · sonar · dredging · draft · keel
Shallow water hazard
- spitExpelled mouth moisture
- tomboloSand strip linking island
- barrierObstruction preventing passage
- duneWind-formed sand ridge
delta · sediment · deposit · alluvial · accretion · erosion · siltation · fluvial
aground
Stuck on seafloor
shipwreck · grounding · buoy · marker · chart · sonar · dredging · draft · keel · vessel
shoal
Shallow water hazard
dune · delta · sediment · deposit · alluvial · accretion · erosion · siltation · fluvial · geomorphology
shoreline
Land-water boundary
inlet · bay · lagoon · tide · surf · waterfront · seashore · littoral · foreshore · breakwater
estuary
Tidal mixing zone
- mangroveTidal shrub with exposed roots
- saltmarshCoastal wetland with brackish water
- seagrassSaltwater flowering plant
tidal · flats · intertidal · ecosystem · nursery · foraging · benthic · wading · birds · seals
- landformsmountain, cliff, valley, volcano, mountain ridge
- coastal landformsbeach, beaches, cliff, cliffs, coast
- ocean featurestrench, atoll, coral reef, continental shelf, barrier reef
- riverbedriver bottom, stream bed, creek bed, substrate, bedrock
- shallow waterknee deep, waist deep, puddle, tide pool, shoal
- shallowsshoal, shallow, shallows, reef, mud flat
sandbankdeep water
Significantly submerged aquatic zone
shipping channel · shipping lane · fairway · open water · the deep
sandbankreef
Underwater rock or coral formation
coral reef · rock outcrop · bedrock · rock formation · seamount
- sandbag wallBarrier of filled sacks