Amazon river dolphin — size comparison

The Amazon river dolphin, or boto, inhabits South American rivers, lakes and seasonally flooded forests. An elongated snout, broad pectoral fins and very mobile

Silhouette comparison

Length

wzdłuż osi ciała · od pyska do końca ogonaScale for the stated dimensions · each animal is labelled

Amazon river dolphin

Inia geoffrensis

ok. 2,4 mAdult individual
total length

wzdłuż osi ciała · od pyska do końca ogonaMeasurement: side

Mass
samce do około 207 kg; samice do około 141 kgDorosłe osobniki
The stated dimensions share a scale without a common ground line. Diver: 170 cm · without fins
Total lengthScale in m
00,511,522,5
Amazon river dolphinTotal lengthapprox. 2.4 m

The scale compares the named dimensions. View direction and measurement points are given for each animal.

Scale based on the stated dimensions for each animal

Diver: 170 cm · without fins
Amazon river dolphin — size comparison — facts and sources

The Amazon river dolphin, or boto, inhabits South American rivers, lakes and seasonally flooded forests. An elongated snout, broad pectoral fins and very mobile neck help it manoeuvre among submerged trunks. Colour varies: young are usually greyer, while adults may become pinkish. Some paler and pink areas in males are associated with scars.

It usually feeds alone or in small groups, chiefly on fish but also crustaceans and occasionally small turtles. Rear teeth can crush harder prey. High river levels open new feeding grounds in flooded forest; as water falls, animals return to main channels and lakes.

Measurement sources