This pie chart shows the relative likelihood of observing particular other species commonly observed near Carcharhinus falciformis

Aquatic Regions:

Circumtropical. Western Atlantic: Massachusetts, USA to southern Brazil, including the Gulf of Mexico and the Caribbean Sea. Eastern Atlantic: Spain, Madeira to northern Angola; St. Paul's Rocks[1]; Cape Verde[2]. Indo-Pacific: scattered records from the Red Sea and Natal, South Africa[3] to China, New Zealand, and the Caroline, Hawaiian, Phoenix and Line islands. Eastern Pacific: southern Baja California, Mexico to northern Chile. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea[4].

Range and Population:

An oceanic and coastal species found in tropical waters around the globe.[5]
Countries:Native:
American Samoa; Angola; Antigua and Barbuda; Aruba; Australia; Bahamas; Bangladesh; Barbados; Belize; Benin; Brazil; Cameroon; Cape Verde; Cayman Islands; Chile; China; Colombia; Comoros; Congo; Congo, The Democratic Republic of the; Cook Islands; Costa Rica (Cocos I.); Cuba; Côte d'Ivoire; Djibouti; Dominica; Dominican Republic; Ecuador; Egypt; El Salvador; Equatorial Guinea; Eritrea; French Guiana; French Polynesia (Clipperton I.); Gabon; Gambia; Ghana; Grenada; Guadeloupe; Guam; Guinea; Guinea-Bissau; Guyana; Haiti; Honduras; Hong Kong; India; Indonesia; Israel; Jamaica; Japan; Jordan; Kiribati; Lebanon; Madagascar; Malaysia; Maldives; Marshall Islands; Martinique; Mauritius; Mexico (Revillagigedo Is.); Micronesia, Federated States of; Montserrat; Mozambique; Netherlands Antilles (Curaçao); New Caledonia; New Zealand; Nicaragua; Nigeria; Northern Mariana Islands; Oman; Palau; Panama; Papua New Guinea; Peru; Philippines; Portugal (Madeira); Puerto Rico; Saint Kitts and Nevis; Saint Lucia; Saint Vincent and the Grenadines; Samoa; Sao Tomé and Principe; Saudi Arabia; Senegal; Sierra Leone; Somalia; South Africa; Spain (Canary Is.); Sri Lanka; Sudan; Suriname; Taiwan, Province of China; Tanzania, United Republic of; Thailand; Togo; Trinidad and Tobago; Turks and Caicos Islands; United States (Hawaiian Is.); Venezuela; Virgin Islands, British; Virgin Islands, U.S.; Yemen

[5][5]

Habitat Overview:

Although essentially pelagic, the silky shark is not restricted to the open ocean and has been recorded from depths as shallow as 18 meters (56 ft). It is an active, swift shark that prefers warmer water (about 23°C). It is commonly found near the edges of continental shelves and over deepwater reefs where there is abundant food source. Typically, it ranges from the surface down to at least 500 meters (1,550 ft) but has been caught over water as deep as 4000 meters (12,4000 ft). Studies show no strong tendency for sexual segregation in the silky shark however, they often travel with others of their own size indicating that size segregation is present within the species. Typically, smaller sharks can be found in coastal nurseries and adults further offshore over deeper water. Small silky sharks are commonly associated with schools of tuna. May be found at depths of 0 to 500 meters.

Biome:

Saltwater. Reef-associated.

Ecology Notes:

C. falciformis occurs offshore, and in oceanic areas in tropical regions. It is found near the edge of continental and insular shelves but has also been recorded far from land in the open sea. It occasionally moves inshore where the water is as shallow as 18 m; in the open ocean it occurs from the surface down to at least 500 m. The silky shark is often found over deepwater reefs and near insular slopes. It is an active, quick-moving, aggressive shark, but defers to the more sluggish but stubbornly persistent oceanic whitetip shark. The species is much more abundant offshore near land than in the open ocean. Primarily a fish-eater, feeding on pelagic and inshore teleosts including sea catfish, mullet, mackerel, yellowfin tuna, albacore, and porcupine fish, but also squid, paper nautiluses, and pelagic crabs (Compagno 1984).[5]

List of Habitats:9.1Marine Neritic - Pelagic 10.1Marine Oceanic - Epipelagic (0-200m)

In sections below, we make some habitat inferences based on the known habitat preferences of those species most commonly associated with Carcharhinus falciformis.

Zone:

alpine, montane, subtropics, temperate, tropics.

Vegetation:

boreal forest, coniferous forests, cultivated areas, deciduous woods and forests, desert, disturbed sites, fence rows, fields, forest edges, forests, gardens, grasslands, hardwood forests, mature forests, meadows, mediterranean-type shrubby vegetation, open forests, pasture, pine forests, rain forest, shrubby vegetation, subarctic grassland, thickets, tundra grassland.

Terrain:

hillsides, pastureland, roadsides, urban areas, valleys.

Soil and Rock:

marl, sandy areas, sandy soil.

Water in Area:

along rivers, bays, bogs, brackish water, coral reef, ditches, dry areas, estuaries, lagoon, lakes, marshes, pelagic, ponds, rivers, saltwater, seamount, shores, streams, subtidal muddy, swamps, swampy areas.

Slopes in Area:

hillsides.