The Day Henry Met…A Bathysphere

Henry meets Bathysphere, a deep-sea vehicle, on a film set. They plan a real ocean dive to explore sea life and complete Bathysphere's checklist. They encounter various sea creatures and descend into the Super Duper Trench of Doom. After a thrilling adventure, they return to the surface, having made new friends and completed their mission.

What was the last thing left on Bathysphere's checklist?

What did Bathysphere and Henry discover at the bottom of the ocean?

How did Bathysphere feel about meeting Henry?