Facts about Brazilian Dolphin Communities
- 06
Seasonal flooding in the Amazon forces river dolphins in Brazil to migrate upstream into flooded forests for up to five months annually, where they feed on fish and fruits in submerged vegetation.
- 05
Female Amazon river dolphins in Brazil give birth to calves with gray coloration that gradually transitions to pink over approximately 10 years as they mature.
- 04
Amazonian river dolphins in Brazil produce individually distinctive whistles that allow them to recognize and call specific members of their community across distances up to 2 kilometers.
- 03
Male Amazon river dolphins develop enlarged foreheads called melons that grow larger with age and may be used to establish dominance within Brazilian dolphin communities.
- 02
Boto dolphins in the Amazon River navigate through flooded forests during seasonal floods by emitting up to 600 clicks per second to echolocate submerged trees and prey.
- 01
Pink river dolphins in the Amazon basin form alliances of up to 14 individuals that cooperatively herd fish into tight balls for easier feeding.