A snorkeler is a person who swims with a mask and a tube to help them breathe while looking at things underwater.
Snorkeling is usually a fun and relaxing activity people do on vacation.
Examples:
The snorkeler saw a big fish.
I want to be a snorkeler when I grow up.
The snorkeler found a pretty shell.
The snorkeler and the fish had a race.
The snorkeler can stay underwater for a long time.
The snorkeler found a treasure chest on the ocean floor.