search google and this website:
NEOTROPICAL
Tropical Freshwater
(Flooded Grassland & Savanna, and Rivers)
The tropical freshwater ecosystems of flooded grasslands and savanna, and rivers and lakes, of South and Central America...
Frog (Mato Grosso Lodge Brazil)
Updates
Well it looks like my first trip after the virus will be the Great Barrier Reef (where I started!) with Coral Expeditions.....I hope. If you can't go travelling until everything settles down, then until then, here I am doing online guided walks for Noble Caledonia and online lectures for Silversea.