You put the star fish on the offering table. You get the star fish from the museum its on Poseidon's face
you put the starfish
Put the starfish on the offering stand.
you don't
Just click use on the starfish very close to Poseidon's altar
first you get the starfish at the museum of poseidons face then go to poseidon castle and put the starfish there and go inside and you are at the beach
you need to put it on the altar in hades lair to gain access to it
you go into the museum and on the statue of Poseidon is a starfish then go to his temple and put it on the altar
Right next to the blocked enterance...
To put the hydro scale on the altar in Mythology Island on Poptropica, you first need to obtain the hydro scale from Poseidon. To do this, solve the underwater labyrinth puzzle and find Poseidon's throne room. Once you have the hydro scale, return to the altar in the Grove of Temples and place it on the pedestal to activate the power of the gods.
First you have to get the starfish on Poseidon's statue in the musume. Then you put the starfish on Poseidon's altar. When you go in the door your see Aphrodite, answer her quiz and your get a useful idem
if you go in the muesem of olympus watch the small clip of teh gods talking then take the starfish off poseidons statue Yuck!
food
You get the Pomegranates from the Garden of the Sphinx. (Where the minotaur entrance is) The Pomegranates are in the tree with a sign that says : "Pick your Own!" Hades's sacred item is a Pomegranate.