Some (Loggerheads) in the Sargasso sea. Terrestrial analogue?
Any thick vegetation? I don't know...
2. Because of water access, they can _and do_ lay in places with reduced predation pressure. Can't think of a place Titanosaurs could get to that their predators could not.
The predators of adult titanosaurs are rather irrelevant to their eggs, I suppose.
3. Not sure of specifics here but would bet that sauropod eggs' optima were more stringent than those of turtles.
Why?