The "sea monster" is the Hydra. It has five heads that try to strike you. When it tries, jump up before it hits you, and land on its head. You have to do that to all five of the heads to defeat it. Then you can get its scale.
(TIP: Don't take long! The heads will start to wake up again if you take too long.)
You can't.
Wimpy Wonderland Red Dragon Island Counterfeit Island Mythology Island Astro Knights Skullduggery
On Mythology Island in Poptropica, the final thing you do is defeat Zeus in a battle to stop him from taking over the island. Once you defeat Zeus, you will have completed the main quest of the island and can claim your medallion.
you have to beat mythology island on poptropica then you put on hades crown and push the space button to turn big
This may be a reference to Zeus, who you battle twice on Poptropica (Mythology Island and Super Villains Island). See the related questions below.
no there is no way at all
how do you beat vampire island on poptropica
There is currently no Ancient Island on Poptropica.
The island that includes a museum in the quest is Counterfeit island. (see the related link) There are also museums on Early Poptropica, Shark Tooth Island, Nabooti Island, AStro Knights island, Mythology Island, Steamworks island, Cryptids Island, and Game Show island.
If you beat an island on Poptropica you should know you beat it because, If you beat it you should get a medal and a few coins! Hope that helps!
you beat it
Counterfeit Island is set on an unnamed French island.(see related solution question)