The Tucuxi is a freshwater dolphin of the Amazon system and a distinct conservation subject from coastal Sotalia dolphins. The registered river experience is in Peru around Iquitos and Nauta, the Ucayali and connected tributaries. IUCN’s 2020 assessment classifies it as Endangered, making responsible observation more important than a close photographic encounter. Species reference: https://www.iucnredlist.org/species/190871/50386457/pdf

Amazon
Peru — Iquitos/Nauta, Ucayali and connected tributaries (2017 cruise) Guided skiff/side-channel viewing; not guaranteed from main ship. Scan water surface.

Amazon River Dolphin
Brown-throated Sloth