The young men told how, in the night when they were asleep, their comrade Ervic had mysteriously disappeared, while the boat in some strange manner had floated to the shore and stranded upon the beach.
That was all they knew.

They had searched in vain for three days for Ervic.

As their island was under water and they could not get back to it, the three Skeezers had no place to go, and so had waited patiently beside their boat for something to happen.
Being questioned by Glinda and the Wizard, they told all they knew about Ozma and Dorothy and declared the two girls were still in the village under the Great Dome.

They were quite safe and would be well cared for by Lady Aurex, now that the Queen who opposed them was out of the way.
When they had gleaned all the information they could from these Skeezers, the Wizard said to Glinda: "If you find you can make this boat obey your sorcery, you could have it return to the island, submerge itself, and enter the door in the basement from which it came.

But I cannot see that our going to the sunken island would enable our friends to escape.