two questions for BRAINLY EST one here one in comments
Which sentence is punctuated correctly?

Every day of the season from the opening day to the last call—is a roller coaster—of excitement and despair.

I found—in the ocean with its waves crashing into silently swaying kelp—a beauty unknown to me before.

My cousin—an expert on the Tyrannosaurus—works as a paleontologist at the local university.

Happily—the crowds—waited in line for what they knew was going to be the best show of their lives.