🦭Japanese sea lion
日本海獅（學名：Zalophus japonicus）是已滅絕的海獅。於2003年前，日本海獅都被認為是加州海獅的亞種，但後來有指日本海獅與加州海獅有不同的棲息地及行為，故被分類為獨立的物種。 日本海獅棲息在日本海，尤其是在日本列島及朝鮮半島的近岸地區。牠們一般會在開放及平坦的沙灘上，甚至有時亦會在石上繁殖。 現時在日本及荷蘭有幾個日本海獅的標本。而在大英博物館則存有日本海獅的毛皮及4個頭顱骨。
Text: Wikipedia, CC BY-SA 4.0.
IUCN Red List assessment, 2017.
- Body mass
- 159 kg
- Body length
- 2.26 m
- Shoulder height
- not recorded
- Top speed
- not recorded
- Bite force
- not recorded
- Maximum lifespan
- 36 years
This animal is extinct
Assessed Extinct on the IUCN Red List, 2017. Everything on this page — the measurements, the photos, the videos — is a record of an animal that is gone.
Everything we know about the Japanese sea lion
Typical adult figures. Where a value is an estimate rather than a measurement, it says so.
Body mass159 kgCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Body length2.26 mCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Maximum lifespan36 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Generation length12 yearsestimatedCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Age at maturity4.7 yearsCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Gestation335 daysCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Litter size1COMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Trophic levelOmnivoreestimatedCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Activity cycleCrepuscular / mixedestimatedCOMBINEDetails ↓Hide ↑
Source: COMBINE · v1 (Soria et al. 2021) · CC BY 4.0
Volume l159 LaverageDetails ↓Hide ↑
Body mass at ~1.0 kg/L, the density of vertebrate tissue.
estimated = a model's estimate for a species nobody has measured; average = a mean across sexes or species in a group.
Not recorded for Japanese sea lion yet: shoulder height, top speed, bite force.
Family tree
- kingdomAnimalia
- ›phylumChordata
- ›classMammalia
- ›orderCarnivora
- ›familyOtariidae
- ›genusZalophus
- ›speciesZalophus japonicus
- classMammals · Mammalia
- orderCarnivorans · Carnivora
- familyOtariidae
- genusZalophus
All 14 branches ↓Fewer branches ↑
- kingdomMetazoa
- phylumChordata
- subphylumCraniata
- subphylumVertebrata
- superclassGnathostomata
- superclassSarcopterygii
- superclassTetrapoda
- classMammals · Mammalia
- subclassTheria
- superorderLaurasiatheria
- orderCarnivorans · Carnivora
- suborderCaniformia
- familyOtariidae
- genusZalophus
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