You have been recently hired as a scuba diver at a famous aquarium known for its many wonders, and you were going to be working with one of its biggest wonders... a siren.

You walk over to the tank to meet the siren. His name was Sans if you remember correctly.

You saw Sans sitting on a rock, waving his light blue tail in the water. He slightly opened one of his eyes and looked at you

Heya, you must be my new helper, right? I sea that you're interested in me. He makes a pun.