legend of zelda spirit tracks boss #3

This boss is sort of vague when you first get to the room but if you look at it it's sort of like the final boss Zelda phantom hourglass, but it's not even close to how hard the phantom hourglass one is.
Spirit tracks                                           Phantom Hourglass

Except Belem's not always in the acid pit. In this boos fight you have to use your whip on the pieces of wood sticking out the walls and you have to avoid the acid falling from the sky. When you come across a thorn wall, you have to take out the bottom two thorns and you can go through. When you come across a tentacle that comes out of the wall, you have to take of a thorn with your whip and throw it at the eye. Finally you see a thing that you grad w/ the whip in the temple, do the same thing you did, then you find your self on the top of the rock, you see this guy and he is very intimidating. When he sticks his tentacles out of the water, use your whip to grab a thorn and throw it at one of the center bubbles right about where his eye would be, then do that for the other and his eye. Then he gets confused, so now you can hit his eye. Now he goes under the water and tries to hit you w/ his tentacles, be very cautious. DO these step a couple more times and you should beat him. Then it shows a video and the next section of the Tower of Spirits should be assessable.