Full list of all 48 Sea Fantasy achievements.
The base game contains 38 achievements, and there is 1 DLC pack containing 10 achievements.
Caught Mulvik
Caught Wera
Caught Maklog
Caught Newclear
Caught Delta Kraken
Caught Demonfrog
Obtained all Marlin series fishing rods
Caught all the Sea'Az
Found all of the Demon World's treasure chests
Caught all Crown-size Sea'Az(demon world)