The Shallows (2016)

Continuity mistake: When Nancy is surfboarding, she is going to ride her last wave for the day. When she is waiting for her last wave, the ocean appears to be calm, but when it cuts to the very far 3rd person view a big wave pops up on the screen. When it cuts back the wave has disappeared.

Cloude2 ★

Question: Nancy finds a broken helmet floating in the water. There's a white thing inside the helmet. Later, she uses that to open a box on the buoy. What exactly is it?

Bunch Son