Coasts and shelves
Shallow seas over the continental shelf. 538 fish on EveryFish so far.
The continental shelf is the shallow sea bed that fringes the continents, usually less than about 200 metres deep. It covers under a tenth of the ocean, but sunlight and nutrients from rivers and upwelling make it very productive, and most of the world's sea catch comes from it. Coastal seas hold schools of sardines and mackerel near the surface and cod, croakers and flatfish near the bottom.
India's coastal fisheries
India has a long coastline, remeasured in 2024 at more than 11,000 km, and most of its sea catch comes from the shelf. Oil sardine and mackerel dominate on the south-west coast, Bombay duck, pomfret and ribbonfish in the north-west, and hilsa, croakers and prawns in the Bay of Bengal. Small-scale fishers work close to shore, while trawlers and purse seiners fish further out. Mechanised fishing stops for 61 days each year during the monsoon breeding season.
Pressure on the shelf
Because shelf seas are close to land and easy to reach, they are heavily fished. Bottom trawling catches many young fish and disturbs the sea bed. Pollution from rivers, coastal building and the loss of mangroves and sea grass affect nurseries. In many seas, catches have shifted from large, valuable fish to smaller ones as the larger fish have been fished out. Marine protected areas and closed seasons are the main tools used to rebuild stocks.
Famous coasts and shelves fish
Bombay duckCaught in tidal nets off Gujarat and Maharashtra
Largehead hairtailRibbonfish, a major export
European plaiceA flatfish of the North SeaFurther reading
WorldSpotted scat
A spotted, square-bodied fish from Indo-Pacific estuaries.Other · Rivers and lakes · 1766
WorldWhite marlin
A fast-swimming billfish of the Atlantic Ocean.Other · Open ocean · 1860
WorldAnglerfish
Ray-finned fish using a modified dorsal fin ray as a lure to catch prey.Other · Coasts and shelves · 1829
WorldWrasse
A large family of colourful marine fish known for sex change and cleaning symbiosis.Reef fish · Coasts and shelves
WorldPorcupinefish
Spiny marine fish that inflate into a defensive sphere to deter predators.Other · Coasts and shelves
WorldRoundscale spearfish
Atlantic billfish often mistaken for white marlinOther · Open ocean · 1841
WorldPomfret
A family of scombriform fish found in oceans worldwide, valued as food.Other · Open ocean
🇩🇪 Germany and 4 moreEuropean smelt
Small coastal fish with a cucumber scentOther · Rivers and lakes
🇯🇵 Japan and 2 moreJapanese amberjack
A prized jack fish native to the northwest Pacific Ocean.Other · Coasts and shelves
🇺🇸 United States and 1 moreNorth Pacific hake
A silver-gray marine fish found in the northeast Pacific Ocean, used for surimi production.Other · Coasts and shelves
Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Plaice: Hans Hillewaert, CC BY-SA 4.0, source
- Queen triggerfish: James St. John, CC BY 2.0, source
- Milkfish: Wiki Farazi, CC0, source
- Ayu sweetfish: Handan99, CC BY-SA 4.0, source
- Spotted scat: Fokko Toelstede, Wikipedia-User „ Nyks “, CC BY-SA 3.0, source
- Greater lizardfish: Francis Day, Public domain, source
- Bigeye scad: SEFSC Pascagoula Laboratory; Collection of Brandi Noble, NOAA/NMFS/SEF, Public domain, source
- Atlantic wolffish: This illustration was made by Citron You must credit this : Citron / C, CC BY-SA 3.0, source
- Sailfish: This illustration was made by Citron You must credit this : Citron / C, CC BY-SA 3.0, source
- White marlin: dominic sherony, CC BY-SA 2.0, source
- Australian ghostshark: fir0002 flagstaffotos [at] gmail.com Canon 20D + Tamron 28-75mm f/2.8, GFDL 1.2, source
- Blue-spotted grouper: Jan Ebr, CC BY 4.0, source
- Oriental sweetlips: Diego Delso, CC BY-SA 4.0, source
- Seahorse: Hans Hillewaert, CC BY-SA 4.0, source
- Gar: Unknown author, Public domain, source
- Atlantic mudskipper: Bjørn Christian Tørrissen, CC BY-SA 4.0, source
- Atlantic horse mackerel: jujurenoult, CC BY 4.0, source
- Anglerfish: Unknown author, Public domain, source
- Argentinian silverside: CHUCAO, CC BY-SA 3.0, source
- Wrasse: Leonard Low, CC BY 2.0, source
- Porcupinefish: jon hanson, CC BY-SA 2.0, source
- Goatfish: Albert Kok at Dutch Wikipedia ( Original text: albert kok ), Public domain, source
- Bigeye trevally: Jens Petersen, CC BY 2.5, source
- Yellowstripe goatfish: Dr. Dwayne Meadows, NOAA/NMFS/OPR, Public domain, source
- Longfin batfish: portioid, CC BY-SA 4.0, source
- Orbicular batfish: Alexander Vasenin, CC BY-SA 3.0, source
- Great barracuda: Diego Delso, CC BY-SA 4.0, source
- Reef stonefish: Karelj, CC BY-SA 3.0, source
- Rabbit fish: MAREANO/Havforskingsinstituttet, CC BY-SA 4.0, source
- Mullet: Unknown author, Public domain, source
- Anchovy: Unknown author, Public domain, source
- Pompano: H. L. Todd, Public domain, source
- Pomfret: The Fisheries and Fisheries Industries of the United States", by Georg, Public domain, source
- Striped marlin: Unknown author, CC BY 4.0, source
- Eulachon: en:User:James Crippen, Public domain, source
- European smelt: WHell at German Wikipedia, Public domain, source
- Pacific sand lance: Mandy Lindeberg, NOAA/NMFS/AKFSC, Public domain, source
- Spotted seatrout: United States Fish Commission, Public domain, source
- Atlantic croaker: Carvalho-Souza, Gómez & González-Ortegón (2024), CC BY 4.0, source
- Bluefish: SEFSC Pascagoula Laboratory; Collection of Brandi Noble, NOAA/NMFS/SEF, Public domain, source
- Escolar: Allen Shimada, NOAA NMFS OST, Public domain, source
- Red gurnard: raffaele48, CC0, source
- Yellowtail amberjack: Nholtzha, CC BY-SA 3.0, source
- Greater amberjack: NOAA Photo Library, CC BY 2.0, source
- Japanese amberjack: E-190's, CC BY-SA 3.0, source
- Lingcod: Will Sides, CC BY 4.0, source
- European hake: Fernando Losada Rodríguez, CC BY-SA 4.0, source
- North Pacific hake: Anonymous Unknown author, Public domain, source
- Largehead hairtail: Unknown author, CC BY-SA 2.5, source
- Bombay duck: Hamid Badar Osmany (hamid61612002@yahoo.com ), CC BY 3.0, source
- Atlantic cod: Wilhelm Thomas Fiege, CC BY-SA 4.0, source
- Atlantic herring: zakqaryroy, CC BY 4.0, source
- Silver pomfret: Takeaway, CC BY-SA 3.0, source
- Indian oil sardine: Nithin bolar k, CC BY-SA 3.0, source
- Indian mackerel: Jean-Lou Justine, CC BY-SA 4.0, source