Star One, "Plunder in the Sunken Ship": Swim down to the sunken ship, and you will see a small window with an eel inside. Go near the eel, then swim away. This will lure him out. Now you are free to go inside the window. Inside you will see treasure chests. Open them in the correct order, and the ship will rise to the surface. Now you can jump up the various ledges inside the ship to get the star!
Star Two, "Can the Eel Come Out to
Play": This one can be annoying due to
the sometimes difficult control of Mario
in the water. To start, go down to where
the ship used to be, and you will see
the eel occupying a small hole in the
wall. Go near him to lure him out. When
he comes out, there will be a star stuck
to his tail! Simply swim near his tail
to retrieve the star.
Star Three, "Treasure of the
Ocean
Cave": Down where the sunken ship used
to be, there is a large entrance to a
cavern. Enter this, and it will bring
you to another portion of the level. Go
through the falling pillars to find some
treasure chests in the back. Open them
in the correct order to retrieve a star.
(Find the right order by trial and
error-- it's not very hard.)
Star Four, "Red Coins on the Ship
Afloat": Mario's back for another
adventure collecting eight red coins. As
suggested by the name, a few of the
coins are on the ship. There are also a
few inside the mouths of clams. This
star is pretty straightforward.
Star Five, "Blast to the Stone
Pillar":
First, you must get the cannon set up on
the level by speaking to the pink
bob-omb. He is located on the right side
of the level near some big tall pole.
Now, enter the level's only cannon,
which is on a miniature mountain that
you can jump to from the start of the
level area. Aim for the middle pillar in
a set of three spike-like pillars that
you will see jutting out from the water.
If you hit it high up enough, you will
automatically hold onto it like a pole.
Now jump onto the nearby platform to
retrieve a star.
Star Six, "Through the Jet
Stream":
Down
where the ship used to be, there is a
jet stream coming from the bottom of the
sea. Towards the bottom of this stream
is a star, but you can't merely swim to
it. You need to get the metal cap that
is located on a platform above water
nearby. Once you get the metal cap, jump
into the water a go to the jet stream.
Now you will be able to walk through it
and get a star!
Star Seven: Collect 100 Coins.
It's
easy.