Wildlife

Amazon River Dolphin Welfare and Mercury Contamination

Amazon river dolphins or botos face illegal killing for fish bait, mercury contamination from gold mining, and habitat degradation across their Amazon and Orinoco range.

Key Facts

Amazon river dolphins are pink and are the largest river dolphin species
They are classified as Endangered with populations declining significantly
Illegal killing for fish bait used to catch piracatinga catfish is a major mortality cause
Mercury from gold mining bioaccumulates causing neurological damage
Dams fragment river systems and alter hydrology critical for their foraging

Welfare Considerations

Illegal killing involves harpoons and hooks causing traumatic death. Mercury poisoning causes neurological damage, affecting coordination and foraging ability over prolonged periods. Dam-related habitat fragmentation isolates populations, reducing genetic diversity. Dolphins that survive mercury exposure may have impaired ability to echolocate for prey. Deforestation of riparian zones reduces flooded forest habitat critical for their feeding.

What You Can Do

Support campaigns against illegal boto killing for catfish bait
Advocate for mercury-free gold mining regulations in the Amazon
Donate to Amazon river dolphin research and monitoring programs
Support dam impact assessment requirements for hydroelectric projects
Engage with governments on river corridor protection for botos