I think it should be clear that the "Whale" and the "Giant Worm with sharp teeth" (or Imprissoned) are two different beasts.
Ghirahim said that a "servant of the goddess snatched Zelda away".
This servant could be:
- Phi
- one of the dragons
- a creature that really looks like that whale (and will perhaps become the Jabu Jabu from OOT)
- the Sheikah girl that is seen to be around Zelda in some of the trailers and pictures
I also think that there should be a clear distinction between Hyrule, Termina and New Hyrule.
Termina: Majora
New Hyrule: Maladus
Hyrule: Ganondorf, Vaati.
Perhaps Vaati will be in SS, but since Vaati has somehing to so with Picori's, windmages and other things that aren't in SS, there will probably be no Vaati.
(Perhaps a connection between a handheld and a console Zeldagame is not something that will happen)
Ganondorf has been confirmed to not be in SS and at the same time SS will "explain why Ganondorf shows up in OOT", so that seems like an interesting paradox.
Conclusion: There is a small probability that either Ganondorf or Vaati will show up in SS and the chance that either Majora or Maladus will show up is almost zero, since they have nothing to do with Hyrule.
SO, there will probably a new antagonist.
(everything from now on is speculation based on the trailers and confirmed Nintendo information)
What we know is that Ghirahim is trying to resurrect his master.
It is amost a law in any game, movie or series that evil will become at its maxed power before it will be defeated, so that means Ghirahim will succeed at resurrecting his master, before they will be defeated.
Link dreams about the giant worm with sharp teeth and Nintendo confirmed that this beast is known as "The Imprissoned", and is goofing around in the Sealed Grounds.
The name "The Imprissoned" means that this being is imprissoned.
This could mean two things:
A- He is imprissoned in his own body, because he looks like a potentially dangerous monster, but has a weird appearance (no arms, no eyes; so he seems incomplete, which keeps him from being truly dangerous).
B- He is imprissoned in this area in which link is seen to be around him in one trailer (this area is assumably the Sealed Grounds). He cannot walk around in the overworld freely, because he is stuck there.
C- both A and B are true.
We can't say up to this point whether A, B or C is true.
Anyway, this "The Imprissoned"-beast is alive and actually physically present.
When Ghirahim is talking about his master, he is saying that he wants to "resurrect" him.
This could seem strange if he would be talking about "The Imprissoned", since this beast is actually alive.
If he would be talking about "The Imprissoned", words like "heal", "repair", "complete", "free", etc. would be more fitting for the situation "The Imprissoned" is in.
English is not my main language, but the word 'resurrect' sounds like, 'recreating something that is not there now, but was there in the past'.
But this "The Imprissoned"-beast, is not something that isn't there, so the word 'resurrect' seems weird when referring to "The Imprissoned".
Or am I misinterpreting the word 'resurrect'?