Ocean Atlas · Animals

Seals, octopuses, jellyfish and more

South American sea lion

Otaria byronia

Curious sea lions may come closer when they choose. Keep space at colonies, never touch or chase, and never treat a sighting as guaranteed.

Least ConcernIn 6 Atlas countries

Least Concern (IUCN, 2016) means it is not at high risk of extinction worldwide today.

Length

Males usually 2.1 to 2.6 m (6.9 to 8.5 ft); females 1.5 to 2 m (4.9 to 6.6 ft). Argentine sources give up to 2.8 m (9.2 ft) for males

Weight

Males usually 300 to 350 kg (660 to 770 lb); females about 170 kg (375 lb), with Argentine sources giving 120 to 160 kg (265 to 355 lb)

Next to a person

An adult bull can weigh as much as several people together and carries a thick mane. Females are much smaller.

What it eats

An opportunistic hunter of fish, squid, octopus and crustaceans. Its diet changes with place and season.

Around people

Potentially dangerous, respect

How it lives

South American sea lions are very social animals. They gather in big groups on the coast, at resting sites used all year or only in some seasons, and at breeding colonies, where one male breeds with several females. They hunt mainly fish and cephalopods, and their diet changes with place and season.

Where it goes

Not a true migrant. They rest at haul-out sites and gather at breeding colonies; in Argentina breeding starts in mid-December and colonies spread out again around late February. After breeding, males often move between nearby colonies, and some travel hundreds of kilometres along the coast.

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

Lives on South American coasts: on the Pacific from Peru to Cape Horn, and on the Atlantic from southern Brazil to the far south of Argentina and the Falklands. Atlantic and Pacific animals form genetically different groups. Punta Loma, near Puerto Madryn, is Chubut's oldest wildlife reserve (1966) and has a breeding colony. Many South American agencies still use the older name Otaria flavescens.

Meet it respectfully

Watch from the Punta Loma viewpoints with quiet voices and a prudent distance. Snorkelling with sea lions in Golfo Nuevo happens only with authorised local trips, and the sea lions choose to come or not. Never touch, feed, chase, surround or block them, even when young animals come close. Bulls defend their space, so keep well back at colonies. Many avoid January and February, the breeding season.

Fun fact

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Where you may meet it

South American sea lion 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 AmericaKazakhstanUzbekistanIndonesiaArgentinaChileDem. Rep. CongoSomaliaKenyaSudanChadHaitiDominican Rep.RussiaBahamasFalkland Is.NorwayGreenlandFr. S. Antarctic LandsTimor-LesteSouth AfricaLesothoMexicoUruguayBrazilBoliviaPeruColombiaPanamaCosta RicaNicaraguaHondurasEl SalvadorGuatemalaBelizeVenezuelaGuyanaSurinameFranceEcuadorPuerto RicoJamaicaCubaZimbabweBotswanaNamibiaSenegalMaliMauritaniaBeninNigerNigeriaCameroonTogoGhanaCôte d'IvoireGuineaGuinea-BissauLiberiaSierra LeoneBurkina FasoCentral African Rep.CongoGabonEq. GuineaZambiaMalawiMozambiqueeSwatiniAngolaBurundiIsraelLebanonMadagascarPalestineGambiaTunisiaAlgeriaJordanUnited Arab EmiratesQatarKuwaitIraqOmanCambodiaThailandLaosMyanmarVietnamNorth KoreaSouth KoreaMongoliaIndiaBangladeshBhutanNepalPakistanAfghanistanTajikistanKyrgyzstanTurkmenistanIranSyriaArmeniaSwedenBelarusUkrainePolandAustriaHungaryMoldovaRomaniaLithuaniaLatviaEstoniaGermanyBulgariaGreeceTurkeyAlbaniaCroatiaSwitzerlandLuxembourgBelgiumNetherlandsPortugalSpainIrelandAustraliaSri LankaChinaTaiwanItalyDenmarkUnited KingdomIcelandAzerbaijanGeorgiaPhilippinesMalaysiaBruneiSloveniaFinlandSlovakiaCzechiaEritreaJapanParaguayYemenSaudi ArabiaN. CyprusCyprusMoroccoEgyptLibyaEthiopiaDjiboutiSomalilandUgandaRwandaBosnia and Herz.MacedoniaSerbiaMontenegroKosovoTrinidad and TobagoS. SudanPuerto Madryn and Punta Loma, ArgentinaPenínsula Valdés and Puerto Pirámides, ArgentinaChiloé and the Gulf of Corcovado, ChileFrancisco Coloane, Strait of Magellan, ChilePunta de Choros and the Humboldt Archipelago, ChileRapa Nui, ChileRobinson Crusoe Island (Juan Fernández), ChileMáncora, Los Órganos and Cabo Blanco, PeruPunta Sal and the Tumbes coast, PeruParacas and the Ballestas Islands, PeruFernando de Noronha, BrazilAbrolhos, BrazilPraia do Forte, BrazilSanta Catarina whale coast, BrazilBonito, BrazilGalápagos, EcuadorHeligoland, GermanyKreidesee Hemmoor, GermanyRuegen and the Baltic coast, Germany

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