Ocean Atlas · Animals

Sharks

Finetooth shark

Carcharhinus isodon

A slim shark of shallow bays and beaches. No sighting is ever a promise, and it keeps its own company.

Near ThreatenedIn 9 Atlas countries

Near Threatened (IUCN, 2019) means it is close to qualifying as threatened, so it needs watching.

Length

Adults average about 1.6 to 1.7 m (5.2 to 5.4 ft). The largest recorded are about 1.9 to 2 m (6.2 to 6.6 ft). One source lists up to 3.4 m, which the others do not support

Weight

Not given in the sources I read. Newborns are about 48 to 64 cm (19 to 25 in) long

Next to a person

About as long as a tall adult, up to a little longer

What it eats

Mostly small bony fish such as Atlantic menhaden, mullet, Spanish mackerel and spot, with some squid and crustaceans. Its small, needle-like teeth suit slippery prey.

Around people

Shy, give space

How it lives

It lives close to shore in bays, lagoons and estuaries, in water usually no deeper than about 10 m in summer and 20 m in winter, and forms large schools. It gives birth to live young after about 12 months. Litters are 2 to 6 pups, born every other year, according to one source. The oldest recorded age is about 22 years. It has never been linked with an attack on a person.

Where it goes

It moves with the seasons. Sources describe movements between the Carolinas and warmer southern waters, and a move away when the surface water drops below about 20 C (68 F).

We only draw a journey on the map when scientists have tracked it or clearly documented it. For this animal we have not found one yet.

Populations

Global: Near Threatened (IUCN, 2019). Its slow breeding and shallow coastal home make it easy to overfish. In US waters NOAA reports the stock as not overfished and not subject to overfishing (2007 assessment), and gillnet bans in Florida, Georgia, South Carolina and Texas have helped. Records from the eastern Atlantic, such as Senegal, are unconfirmed, so the West African countries in the Atlas may rest on misidentified records. I found no population counts for Brazil.

Meet it respectfully

Finetooth sharks use shallow water close to beaches, so give them space and do not crowd them. Never chase, touch, feed or bait one. Do not use fish scraps to draw one in. I did not read any local rules, so follow your guide and local rules.

Fun fact

Tap the bulb to light it up.

Where you may meet it

Finetooth shark in the Ocean Atlas

Places we have researched where this animal is recorded. It is never guaranteed, and some places are for watching from the boat only.

FijiTanzaniaW. SaharaCanadaUnited States of AmericaKazakhstanUzbekistanArgentinaChileDem. Rep. CongoSomaliaKenyaSudanChadHaitiDominican Rep.RussiaBahamasNorwayGreenlandSouth AfricaLesothoMexicoUruguayBrazilBoliviaPeruColombiaPanamaCosta RicaNicaraguaHondurasEl SalvadorGuatemalaBelizeVenezuelaGuyanaSurinameFranceEcuadorPuerto RicoJamaicaCubaZimbabweBotswanaNamibiaSenegalMaliMauritaniaBeninNigerNigeriaCameroonTogoGhanaCôte d'IvoireGuineaGuinea-BissauLiberiaSierra LeoneBurkina FasoCentral African Rep.CongoGabonEq. GuineaZambiaMalawiMozambiqueeSwatiniAngolaBurundiIsraelLebanonMadagascarPalestineGambiaTunisiaAlgeriaJordanUnited Arab EmiratesQatarKuwaitIraqOmanMyanmarMongoliaIndiaBangladeshBhutanNepalPakistanAfghanistanTajikistanKyrgyzstanTurkmenistanIranSyriaArmeniaSwedenBelarusUkrainePolandAustriaHungaryMoldovaRomaniaLithuaniaLatviaEstoniaGermanyBulgariaGreeceTurkeyAlbaniaCroatiaSwitzerlandLuxembourgBelgiumNetherlandsPortugalSpainIrelandSri LankaChinaItalyDenmarkUnited KingdomIcelandAzerbaijanGeorgiaSloveniaFinlandSlovakiaCzechiaEritreaParaguayYemenSaudi ArabiaN. CyprusCyprusMoroccoEgyptLibyaEthiopiaDjiboutiSomalilandUgandaRwandaBosnia and Herz.MacedoniaSerbiaMontenegroKosovoTrinidad and TobagoS. SudanFernando de Noronha, BrazilAbrolhos, BrazilPraia do Forte, BrazilSanta Catarina whale coast, BrazilBonito, BrazilKribi and Ebodje coast, CameroonDouala-Edea coast, CameroonGrand-Béréby, Côte d'IvoireMayumba National Park, GabonLoango National Park, GabonAda Foah and the Volta estuary, GhanaMuni-Pomadze, GhanaGrand Kru coast, LiberiaLittle Bassa and Rivercess, LiberiaLagos coast and Lekki, NigeriaBadagry coast, NigeriaTurtle Islands and Sherbro Island, Sierra LeoneFreetown peninsula, Sierra LeoneFlorida Keys (Key Largo), United StatesLa Jolla and the Channel Islands, United StatesMaui, United StatesOʻahu, United StatesSan Diego and La Jolla, United StatesJuneau and Southeast Alaska, United StatesGlacier Bay, United StatesSeward and Kenai Fjords, United States

Travel with usComing soonTrusted referralExploringOn pause, story onlyEthics pass

Country colour: pink where we travel, blue where we are exploring or refer, grey for story only.

Sources for this page
For partners

Work in ocean travel?

We are always happy to hear from exceptional local operators, accommodation, conservation organisations and destination experts. If your work fits responsible, small-group ocean travel, we would love to learn more.

Partner with Ocean Calling
You might like

Swim with humpback whales in Moʻorea, September 2027

from CHF 4,500