The first Puzzle Piece is directly under where Donkey Kong crashes onto the pier to begin the level. Move forward from the starting point until you find flimsy wooden boards you can Ground Pound through. This will drop you down to the beach. Now continue to your left until you see a wooden post. Pound it into the ground to raise another nearby post and reveal the Puzzle Piece. Now continue forward until you reach the first checkpoint.
The second Puzzle Piece is located not very far from the first checkpoint. To get to it, you need to carry a barrel from the ledge just past the checkpoint to break open the wall protecting the piece. However, to get to that wall, you need to get the barrel past a pair of Squid Shot turrets. The upper one is firing Squiddles you can bounce off of. The lower one is firing Electrasquid exclusively. Compounding this is a small spike pit in front of the Squid Shots, making this a tough jump.
The best way past this is to not hesitate whatsoever once you get the barrel in hand. Jump off the ledge onto the pillar in the middle of the chasm, then advance towards the Squid Shots at full speed on foot. If the timing is right, you can jump just as the upper Squid Shot fires a Squiddles, bounce off of it, and reach the other side of the turrets. Destroy the wall with your barrel and collect your prize.
This can be a tough little section to get past. Another pair of Squid Shots bombard the area with Squiddles. You can use them to bounce up to the top of a boat wreck above the second Puzzle Piece and collect some bananas. Be careful that your momentum while traveling to the right doesn’t dump you into the sea.
You can find the third Puzzle Piece inside another small boat wreck beyond the Squid Shots and the water hazard. Pound on the deck of the boat to crash through it and discover the piece, along with a cache of bananas. You can then Ground Pound on a set of boards on the ground to unleash a geyser that will boost you out of the ship.
This is a relatively easy Puzzle Piece to capture. Stand on the crumbling pillar until it tilts forward. This should dump you directly onto the fourth Puzzle Piece. Just be careful that you don’t get dumped into the sea, and that you avoid the Jellybob and Nibbles leaping out of the water.
Pace yourself traveling through these spike-lined caves. The water jets don’t allow you much maneuverability and can cost you precious hearts.
The section where water jets are suspending wooden platforms in the air hides the fifth Puzzle Piece. You will eventually reach a treasure chest suspended on a small ledge. Above it is some grass you can cling to. Climb along it to reach the piece.
Puzzle Piece number six is found in a bonus room just past a trio of water jets that shoot you up towards a ring of bananas. As you pass the bananas, make for the ledge to the left of them and press against the wall to enter the bonus room.
Shortly after collecting Puzzle Piece six, you can find the seventh a little further along the main path. You’ll encounter another trio of water jets underneath a ring of bananas, guarded by a Squid Shot atop a large stone pillar left of the water jets. Collect all of the bananas in that ring to reveal the final Puzzle Piece.