the globe says
Bangladesh
Fly to Dhaka, travel to Khulna, then board a multi-day boat into the world's largest mangrove forest.
On the boat — bunks on deck, meals from the galley, anchored in tidal channels at night.
A drowned forest the size of a small country where the Bengal tiger still rules: mudskipper flats, honey collectors who wear masks on the backs of their heads, and channels of glassy silence.
Dawn on deck with binoculars — deer at the waterline, and the possibility, always, of stripes.
November to February
Dhonnobad — thank you, in Bangla.
The Hungry Tide by Amitav Ghosh — the Sundarbans novel, full stop.
Old Dhaka's river port of Sadarghat — the most alive waterfront in Asia, before or after.
You go with licensed boats and forest permits, and you do not walk in the forest — the tigers here are famously serious about this.