Image imported from derpibooru 
Original Description:
 
“Spike, I can’t believe you! You nearly drowned us!”
 
“I-I’m sorry Twilight, I didn’t mean to—”
 
“No Spike, you can’t just panic and swim off like that! You could’ve drowned before I reached you!”
 
“Sorry, b-but I’m scared!”
 
“Spike, I know you’re scared, but you have to trust me!”
 
“T-Twilight…”
 
“Look Spike, I’m scared too, okay? But we have to stick together. I know there’s hardly any air around here, and my magic’s no good, but you have to stay close. I don’t want you swimming off like that ever again, understood?”
 
“…Alright. I understand.”