While sailing on your ship, you will encounter enemy pirate ships. If you destroy all the ships in the group, the last ship destroyed will leave a red "X" on your map. This is where you can salvage for treasure.
If you've played Animal Crossing: Wild World then you'll recognize a reference in Phantom Hourglass. When you first meet the Postman, you and he will talk for a while. He'll ask you that you try not to shoot him with the slingshot out of the air, a reference to Pete the Postman in AC:WW, who suffers a similar fate that the Postman in PH is trying to avoid!
When you enter the ghost ship for the first time in the northwestern sea after collecting all three spirits: Power, Wisdom, and Courage, go downstairs. Defeat the enemies, and the blue flame will extinguish. Talk to the girl in red. She'll ask you to find her three sisters. When you find the second sister in yellow, she will say that there are two treasure chests. Insist to take the one on the left. She will ask if you know which one is left. If you select "Not really", she will say "You silly boy, left is the one that isn't right." If you take the one on the left, you will get ten Rupoor, another Reapling will appear, and the girl will laugh and say "TEE-HEE! how unlucky for you."
To easily get the high score of 2.500 in the Cannon mini-game, hit the red targets five times to make 100. Then hit the blue targets. The prizes can be Green Rupee (1), Blue Rupee (5), Red Rupee (20), Big Green Rupee (100), Big Red Rupee (200), Ship Parts, Power Gem, Wisdom Gem, or a Courage Gem. A prize of your choice is awarded if you get 2,500 points.
Look on the map to see the three people Blaaz turns into. Each one has a certain amount of horns with the boomerang. Hit them in order from least to greatest and they will become Blaaz, then hit him with your sword and repeat.
When you open the chest the girl tells you to, you will get a Rupoor and another Reapling. When you activate the switch on B3, it leads to a trap door and spawns a Reapling. The order of the switches is not 24513 as the tablet says, but actually41523. Note: Don't follow that exact order, follow the positions of the numbers (for example, 1 is the fourth number, and 2 is the first).
To easily gain Rupees, when traveling the ocean, shoot the jellyfish-like creatures that hover high above your ship to get one Rupee. After 10-15 hits, it will multiply, giving you double the Rupees if you aim correctly. Once it multiplies, the copies will begin to descend into the sea. Keep them afloat by shooting and hitting them.
To easily gain Rupees, take all of the ship parts and treasures you have doubles of to the Collector on Mercay Island. However, do not take your Pink Coral there. There is a travelers ship filled with men with telescopes. A person there will buy the Coral for a lot more than the Collector.
Go to the northeast ocean and into the Traveler's Ship. Kill the enemies there, then exit. The Man Of Smiles will appear and give you the Hero's New Clothes (if you have not been there before). Do this again to receive the Prize Postcard. Put it in the mailbox to get a prize. Note: If it says that you won, you actually lost. If you lost, you actually won.
In the northwestern area, sail to the traveling ship, and climb aboard. Talk to the "Doppleganger", and he'll tell you that his boat's name is "The Prince of Red Lions". He will then take you as an apprentice and challenge you to a fight. Fight him, then leave, and re-enter the ship. Fight him again, but inflict more hits than last time. Exit, and re-enter again. Fight him, and get as many hits as possible. Under 100 hits will earn you a spoil . More than 100 hits will get you a Heart Container.
Make sure tohave Purple Potions. In his first form, he will sit in the middle of the pool while spitting drops of sludge that turn into enemies if you do not get hit by them. Equip the Grapple Hook and grab the purple puddles on Bellum's body while dodging and destroying the enemies he spits out. Use the Grapple Hook to bring Bellum to you, then slash away. Repeat this process until he flies to the second floor. Run up the stairs to the next floor and equip the bow and arrows, then aim for the eyes on his tentacles. Note: The ones with their eye open will attack if you are nearby. Once they are all shut, he will fall into the pool again. Once again, equip the Grapple Hook and grab the puddles on him, then grab him. Strike him as much as you can befre he gets up. He will go to the third floor of the structure so follow him up, then take aim. He will usestronger attacks this time. When his tentacles all raise up, stand behind a pillar to avoid taking damage. His tentacles are harder to take out because the eyes on them occasionally close and your arrows don't hurt them. Keep dodging and shooting his tentacles until they are all out again. After the intermission sequence, then go to the first floor. Once there, the steps will break away and Bellum will attack. Celia will then make a Phantom Sphere for you, which can be used by tapping the circle in the bottom center of the screen and drawing a figure "8" within the frame that appears. If done correctly, time should stop for a moment. Time it to when Bellum is rampaging in a circle with his eye open, then slash at his exposed eye. Repeat this until he is done for.
To get the hidden treasure chest in Mercay Islands, go southeast on the east side of the island and you'll see a treasure chest. Find a chicken and then go back to the treasure chest. Back up slightly, then run up and jump. You should be able to reach the treasure chest and get the crown that was passed down by the Zoras from generation to generation.
Beble's ship can only be accessed once a day; if you buy everything he has, he can only sell you potions. Beble's ship is a good place to get cheap treasures and rare ship parts. Go to his ship, and buy everything he has. Save the game, then turn off the DS. Turn it back on, and change the system date. Turn off the DS, then resume the game. You should start at your save point. Go to Beble's ship, which should be closed. His stock should be refilled.
On the second basement floor, you are required to get a key. Instead of doing the entire puzzle on that floor, make the key appear by hitting the two globes, and make the fire disappear by pulling the lever. Go to the red blocks that are blocking your way. You should be able to see the key behind the wall. Stand above the third red block from the left. Face northwest, and pull out your boomerang. You should be able to get the key by starting an oval and going counterclockwise from Link all the way to the key and back to Link.
Go to Bannan Island and speak to the Old Wayfarer. He will say that he has been chasing a mermaid, but she only appears when there are no monsters around. Kill all the monsters on the island (the bats in the cave do not count) to make her appear by the coast. If you get near her, she will dive and reappear somewhere else on the island. Throw the boomerang at her, then talk to the Old Wayfarer. Go to Linebeck, then back to the Old Wayfarer.
In the town of Mercay Island, attack a chicken until it turns red and dozens of other chickens attack you. This might also work in other areas with chickens. The attack eventually ends, but you may lose two to three hearts.
Unlock the following Big Plays by performing the corresponding tasks against another player in WiFi mode. Note - You will get a letter that allows you to get a Golden part for your ship at Cannon Island for every four Big Plays.
HOW TO UNLOCK
Beat the "Limit" and "Master" Big Plays in the same match.
Break 10 or more of your opponent's helpful items.
Win by turning all the Force Gems your color.
Win without letting your opponent score any points.
Take Link down three times with the Phantoms.
Defeat Link within the last 20 seconds two times.
Beat the "No Miss" and "Guardian" Big Plays in the same match.
Win by a final score of 1-0.
Win without dropping any Force Gems outside a base or safe zone.
Win without taking an item.
Win without being taken down with Link.
Beat the "Get Everything" and "Guardian" Big Plays in the same match.
Beat the "Perfect" and "Limit" Big Plays in the same match.
Win a match by defeating Link in the first 20 seconds of two turns.
Defeat Link in any one turn using only one Phantom.