I've been thinking about my vacation this summer. I would like to scuba dive. 
Scuba diving is quite an experience. Are you certified and do you have the necessary scuba skills?
Not yet! Do you know how long it would take to get certified? 
If you're going on vacation soon, it might just be better to do introductory diving. You don't need certification and it's less time-consuming.
Oh wow, thanks for the advice. I wonder if the resort I was looking at will offer introductory sessions. 
They probably do! Introductory diving is probably better, because you'll have a diving instructor guide you around. 
Oh that makes sense. I'm interested in all of the creatures under the sea. 
Scuba diving is definitely a great way to experience that! It's best to avoid touching anything though. Try not to disturbe the marine animals.