More riddles!??!?! and free points Imagine you are in a sinking rowboat surrounded by sharks. How would you survive?

I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty. what am i?

Each morning I appear to lie at your feet. All day I will follow no matter how fast you run, yet I nearly perish in the midday sun. what am i?

When someone doesn’t swim in the ocean
Then this animal might be the cause
Because they’re afraid they’ll be bitten