I was just about to post that there is a microscopic creature--Hydra that scientists have interest about..!

Also, to answer the Swans question, it is said that in greek Mythology there is Apollo who rode on a swan to a place called Hyperboreans, where he would spend the winter. But it also says that his mother gave him the island, floating, named Delos, which was not a mainland/island/landmass.

It also said that the island was surrounded by swans...
Maybe this Greek Mythology is tied in with the fact that the island is unrecognisable (as BLinus stated: 'only God can see us'). That information is at link below, although MOST people have probably already seeing this...
also, sorry about my poor English grammar
Apollo Candy Bar - Lostpedia

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