Well, you can always make one.
yes, it is the survival island from minecraft
No, you cannot.
survival island or skyblock
Minecraft has roughly 400.000,000 Downloads.
1134648poooo
The survival island map is 100% free, there's no cost attached to the seed/world download. If you have paid for it, I'd try and receive a refund.
You can Download finished Minecraft at: minecraft.net/downloads
Yes there is. It is "neather seed" without the quotations. Hope this helped.
No, you can't add any fan-made content to the XBox360 version.
Just look up Minecraft Servers and search for 'Survival'
You can play Minecraft Classic for free in a browser, at the Minecraft webpage.
If its the yogscast videos, (bluexephos) then there are no more survival island videos, they moved on to shadow of israphel. If its the game itself, you need to look for something in the sky and then put a signal for help! Hope I helped :-)