Version 1.0.16 update | Coral Keeper

Quitting right after you start gives no participation rewards. Tide Pool crew cards, Arena loss participation trophies, and battle counts for Daily and Weekly Missions no longer accumulate from quit matches or 0-turn losses. You still receive the Shells and Pass XP for the turns you survived.
Each Special mode now has its own background and music. Tide Pool (a sunlit shallow rock pool), Boss Rush (a crimson dueling arena) and Endless Abyss (a pitch-black trench) each have their own background art, and 5 new music tracks were added for Special, Hard and Boss battles. The track changes as soon as you enter.
Every crew member now has its own attack sound. There are now projectile sounds for 30 types in total, covering the 28 crew types, the Reef Keeper and the Arena boss ally, and attack sounds now play in the Arena too. We also smoothed out the crackling sound.
Fixed the crackling sound. We reduced the background-music noise heard on some devices and improved the music quality.
You can now watch currencies rise in real time. When rewards fly in, the Shell and Pearl counters at the top fill up each time an egg lands, and the total is shown.
The Lead Reef Keeper now appears at full size from the start. We fixed the issue where it seemed to change size while the art was downloading. The bases and nests in Special battles also appear right away.
Apps in Toss: the Toss Points amount for the tutorial mission was adjusted from 10 to 2 Toss Points (1.0.16b).