A vacation tour or package that showcases ecology (wildlife, etc.) or is ecologically friendly.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "ecotour" in a sentence
"Instead, I was partaking in a 10-day trek through the wilds of malaria country with Terra Incognita's ecotour in the northern Malaysian state of Sabah."
"He did all the things a good ecotour guide should do."
"The adventure was part of Terra Incognito's outstanding ecotour of Borneo that involved not only creepy caves, but also elephants, monkeys, crocodiles and orangutan sightings."