The subject of this article or section is part of a Micro-holiday, a seasonal event that lasts a few days. Once the event has run its course, this will no longer be available until next year, but there are no guarantees.
This article concerns content exclusive to Legion.
March of the Tadpoles is a micro-holiday added with Patch 7.1.5 that takes place on April 5. It technically ends the next day, but very early (4 AM).
Official preview description
Each year, the Winterfin murlocs allow their tadpoles free reign over their village. You can make a difference by adopting your favorite, feeding it, and protecting it from nearby predators.