To all the kids and the kids at heart out there, here's a Poptropica S.O.S island walkthrough. I just recently finished this island and thought sharing a guide with you guys.
First of all, use your blimp to head to the S.O.S. island. Once you got there walk to the left and talk to the first mate. You are now given the task to save all the passengers of the sinking ship.
You'll notice that the entrance is blocked by mountain of snow and the only way to get rid of it is by destroying it with the boulder above. Move further left and you will see that there are some boats where you can jump on. Continue jumping from the boats until you reach the deck of the ship.Once you've reach it, head to the right where the boulder is located. When you click the snow boulder, your character should be pushing it to fall at the snow mountain.This will clear the entrance and once the ship's entrance is cleared, enter it.
After you're in, you'll see that there is a door to the bridge. Enter through this door and head further to the left and speak to the captain. You ask him to leave the ship for his safety but he will stand his ground as the "captain always goes down with the ship!"
You will need to open the emergency door and once it's opened, leave the bridge and head to the left until you find door six with a trapped passenger. You'll realize that the passenger you saved is a whale caller. Once you saved him, he will give you a whale song maker. The ship will take more water and be near to fully sinking. Head back to the ship's entrance and talk to the captain of the ship again. This time, he'll ask you to save the ship's cruise director named Starbuck. Leave the bridge and head to the left of the hallway until you find the ballroom. Starbuck can't swim so you'll need to find another way to save her. Click on the floating bottle of champagne at the juice bar and head to the farthest floating chair. Stand on it and click on your acquired bottle. Shoot the crack on the glass to raise the water level and help Starbuck reach the small life raft. Once this is done, head to another floating chair located at far right of the ball room. You will see another crack in the glass. Shoot it with the bottle cap like you did before. Once the water level is raised again, push Starbuck's raft to the door to be able for both of you to leave the ballroom.
Once you saved Starbuck, more than half of the ship will be sub merged in water. The only way to go inside now is through a hole in the hull. To get to this hole, jump you way through the ledges, windows and umbrellas till you reach the stern which is now located at the top. Once inside, jump down until you reach the flooded floor. You will notice a gear that you can turn when you click it. This gear will raise the water level a little bit which is needed to progress through the story. Once the water level is raised, you will see an open vent where you will need to enter. Once entered, head upwards for some air and remember to avoid the jellyfishes! There will be platforms where you can step on to move upwards further. You need to continue jumping up to find the boiler room where you need to reroute some pipes...
Reroute the pipes like how I did it above and it will give you access to another room at the top left corner. Head to the upper right corner until you see the engineer. You'll see that you need to turn the valves to let the pressure flow. Turn the four valves one by one to get past the steam and you'll be able to save the engineer. Once you saved her, the ship will took a nose dive and will be almost fully sank. This time, you will need to save the chef. Another hole will be visible at the stern which is now the highest point in the ship. Jump your way through the platforms and climb up the ropes till you reach the stern. Once you're inside again, move the the lower left corner of the room you are in and exit through it. You'll notice that you are once again in the ballroom and you need to head for the door. Once you're inside the hallway, move up and use the lights as platforms. Enter through the vent and you should end up in the ship's kitchen. Move a little bit down and enter the freezer. You will notice that you need to break some of the crates to find the frozen chef. Push him through the exit door and navigate your way down with the frozen chef to the oven to melt the ice. Make sure that you use the crates so the chef will not be stuck. Once you've melted the ice and the chef is saved from the sinking ship, head back and save the final passenger—the captain.
You'll realize that the ship is completely upside down but the hole that is located at the stern is still visible. Enter through that hole and head to the lower left side of the map. Once you're on the next map there will be sharks with big jaws trying to slow you down, head to the upper left corner and you will be directed to the ballroom. Navigate your way to the left again and head to the vents. Once you're out of the vents, move to the right corner of the room and enter another vent. This will lead to the kitchen and you will need to navigate your way to the left side of the room. Once you're out of the kitchen , you will be now at the bridge. head down and avoid the crabs and electric wires. Once you talk to the captain you'll realize that the whale was not at fault for the sinking ship but the captain running after it and hitting an iceberg was.
The only way out now is by using the whale song gadget and getting help from the whale. The whale will spit you out to an island where you and the captain will be both in safety. The captain will thank you for saving everyone's lives and this will be the end of your island adventure as you receive the S.O.S island medallion.
Well, that's the end for this guide. I hope you find use for it. If you have any questions or queries, just post a comment below.