Safaris without guns, say

• Trips to environmentally protected areas
• Trips to the Galápagos, e.g
• Trips to support conservation
• Environmentalists' excursions
• Bed for us at rear of office, conserving holidays
• Nature excursions
• Trips where a "carry in, carry out" policy may be observed
• Trips through rain forests, maybe

Wiktionary Word definitions in Wiktionary
n. (plural of ecotour English)