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Harbor porpoise

Harbor porpoise lifespan and age in human years

Longest recorded 20.4 years

🏆 The longest-lived harbor porpoise on record reached 20.4 years in captivity.

Harbor porpoise (Phocoena phocoena). The oldest known individual lived 20.4 years; this chart maps that record to a human age of 120. Most individuals live considerably shorter lives than the record.

How old in human years?

Age

Harbor porpoise age chart in human years

Shaded rows are equivalent to human age 60+.

Harbor porpoiseHuman ageStage
1 yr6Child
2 yr12Child
3 yr19Teen
4 yr24Adult
5 yr30Adult
6 yr36Adult
7 yr42Middle age
8 yr48Middle age
9 yr54Middle age
10 yr59Middle age
11 yr65Senior
12 yr71Senior
13 yr77Elderly
14 yr83Elderly
15 yr89Elderly
16 yr94Elderly
17 yr100Elderly
18 yr106Elderly
19 yr112Elderly
20 yr118Elderly
21 yr123Elderly
22 yr129Elderly
23 yr135Elderly
24 yr141Elderly
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Harbor porpoise profile

ClassificationMammalia > Cetacea > Phocoenidae
Scientific namePhocoena phocoena
Adult weightabout 52 kg
Age of maturity2.9 years
Gestationabout 320 days
Litter / clutch size1
Longest recorded20.4 years (captivity)

Sources

How we convert ages: method.

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