Your Secret Letter Is... U

Correct! You've located the dazzling Barbour's Seahorse.

🔎 Clue #5

For the first months of my life, I never let go even upside-down. I learned what to eat by tasting my mother's lips. And when she finally nudged me away, she left me a piece of her world to call my own. What am I?

Once you figure out the clue above, venture to that location to find the QR code sign that you need to collect the next secret letter!