Jaw whales

Jaw whales would be a water themed mob, and is a filter feeder, like most whales. However, it cannot see very well, and it can unintentionally eat the player if they are not careful. If it eats the player, the player would be inside of the whale (similar to a dimension) and inside the whale they would find chests, containing loot similar to what you would find inside a shipwreck. Inside would also be a new liquid, which is acid. This can be put in a bucket like most other liquids. Acid is basically lava, but it doesn't burn wood (but it does burn players and items, but the items burn at a slow rate).