Water Festival Tasks?

Yea it was a small but cool thing.

There are at least 3 tasks that appeared with the water event, they are just not labeled as such:
Hatch an egg - shellder.
Use 3 berries to catch a Pokemon - wailmer.
Win a raid - 1 rare candy.

I don't know why the Water Festival quests aren't labeled as such, but I wish they had done it in the same fashion as the Adventure Week tasks. Currently, there are two Water Festival quests (hatch an egg and battle in a gym 3 times) that reward Shellder encounters. However, there are also non-event versions of those same exact tasks that reward an Exeggcute and Kingler encounter. It's currently impossible to determine whether the tasks are the event versions or not (until you've completed them), which the labeling would have clarified.

Thery arent as specific as the adventure week tasks. I guess thats the reason.

Ya they did the same last month with electric type research rewards. I guess the water festival is part of the larger articuno/water and ice theme They have going on this month