Usually mangroves could be found in the tropical and subtropical regions of the world, and of course it is not possible to find it in the Russia. However each year I go to Novgorod for canoepolo competition, and In the first day's evening I spend a half of hour to go to the shrubs and trees which grows in the river not far from the Novgorod's kremlin.
This is very nice and silent place in the downtown. After 5 minutes of rowing you are comming to the completly different world. There is no sounds from the outside and only bird songs and rustle of leaves.
This year I get the camcoder with myself to capture the view of this place, but unfortunately the water level was extreemly low and I was not able to go by kayak through all the forest on the water. But I still have the picture of some places of the Novgorod's "mangroves"