Could be a uprooted tree, could be a swarm of jellyfish or crill, could be anything. Remember, these picture are taken from a bit of a distance, so no surprise if there was something in between the satellite and the water. Most likely though, its a shadow of a cloud.
When I was 15 years old, I don't believe other country is exist, but now I'm in China, now, I believe.
FAIL How could you not know other countries existed until you were 15!!!
I think it's real. Some new 'extinct species' have been found inside the mountain of Indonesia. In Papua Island. Just Yahoo it or google it.
Yes, as I said earlier, if you think some prehistoric dinosaur has been living there for millions of years, breeding and living off local fish that are, might I add, very tiny, and never once finding any definitive proof, then you need help.