How do I get the sponge?
Solution 1:
You get it by killing the sponge on the sea floor. With the sponge you are able to squeeze into smaller gaps (such as the gap in The Hole to reach a chest).
Solution 2:
This is how you get the sea sponge:
Go to the port and into the sea.
Keep on killing enemies but STAY AT THE BOTTOM OF THE SEA FLOOR.
When you see an item that looks like the shell powder, but with more symbols, kill it.
Go into your inventory and you should have the sea sponge!
END
Solution 3:
Basically, you want to wear the octopus crown with jaspers, the pink enchanted gloves, any weapon (preferably your best one), and stay close to the floor of the sea. You won't always get it first time round, so go a few times till you do.