  We introduce a simple bijection between Tamari intervals and the blossoming
trees (Poulalhon and Schaeffer, 2006) encoding planar triangulations, using a
new meandering representation of such trees. Its specializations to the
families of synchronized, Kreweras, new/modern, and infinitely modern intervals
give a combinatorial proof of the counting formula for each family. Compared to
(Bernardi and Bonichon, 2009), our bijection behaves well with the duality of
Tamari intervals, enabling also the counting of self-dual intervals.
