In this picture although its too small to see is a New Zealand Kingfisher bird. It eats small bugs and probably small fish and crabs.
The Mangroves are not much to see but when you know the way it survives its an amazing plant.
The main root and branch and stem has in inside that is far more saltier than the sea around it, that way the way goes inside the plant to feed it. It breathes through aerial roots. Life grows around the Mangroves and countless live stock lives inside it.
This is the world of many small marine animals.