🦦
Eurasian otter
Lutra lutra
Carnivores · Near threatened
vs
🦦
Sea otter
Enhydra lutris
Carnivores · Endangered
9 clips name both of them
163,439 views between them.
Sea otter outweighs Eurasian otter 3.5× — 27.4 kg against 7.8 kg. Both figures are averages across males and females.
Tale of the tape
Body mass
7.81 kg
🦦 Eurasian otter · COMBINE
27 kg
🦦 Sea otter · COMBINE
Body length
0.75 m
🦦 Eurasian otter · COMBINE
0.35 m
🦦 Sea otter · COMBINE
Maximum lifespan
22 yr
🦦 Eurasian otter · COMBINE
30 yr
🦦 Sea otter · COMBINE
Bars are sized against the larger of the two figures.
Animals caught on camera
Real footage of the animals on this site — hunting, fighting, and getting on with it.
Shared ancestry
The closest group they share is Lutrinae (subfamily), home to 24 species.
They last shared an ancestor about 5.8 million years ago.
Estimates range from 4.5 to 8.4 million years; the figure above is the middle estimate.
About this estimate
Dates from Upham, Esselstyn & Jetz 2019, PLoS Biology 17:e3000494 (CC0).