Mermaids on Land

"Ah, your sister. Bay was it? After enough torture she told us everything we needed to know about your family, including that you swim at the beach every morning. That's how we knew where you were. It was just a matter of ---"
"Where is she?!" I interrupted him.
He looked at me for a few minutes before he answered. "The zoo. The twin, Brook should be having a field trip there as we speak."
"That's enough chit chat." A new voice stated, even deeper and scarier than this boy's. "Get your samples already."
The boy nodded his head as he started working. Setting up his equipment. Soon he was ready.
"What are you gonna do?" I ask with my shaky voice. He didn't answer just poured some water on my legs. Then the pain started. He was tearing off one of my scales. I screamed in pure agony.
"Get at least five." The voice told the boy. And that's what he did. Later he would take my blood. All while I was strapped to a table. Hopefully someone is looking for me.