A joyful specimen of charade and glee. While outwardly it facades the appearance and behaviour of sharks, even similarly to other specimens within the facility; they are actually dolphins.

We are still unsure as to their reasoning of mimicry, as the creatures themselves hold no competitive advantage over the mocking facade, being well equipped with their own claws, lethal much teeth, and eyes adapted for dimly lit environments unlike their home species of more passive dolphins. Their appearances often remain lanky, donning white stripes, vibrant blue eyes and strikingly cyan teeth.

Documented interactions with these speciments have been all positive, providing a new change in study from the typical volatile behaviour. They've thus far shown no aggression towards personnel, although akin to other projects, retain the primal behaviour, but more numbed - like a puppy!

UPDATE:

Transmission Recorded on ███/███/██████

"Specimen is to be terminated. It killed them, I- saw it. It lured them away. It was pretending. It knew, how did it know? It hasn't given us anything more substantial in intelligence."

"IT TORE THEM TO SHREDS. It hasn't stopped SMILING. THEY'RE SHREDS. IT ENJOYED IT??-"

"Wa--it,"

"Doctor- Is. Is that you? But I thought? Doctor? How did you get away? Why- are you, what are you smiling about? You're- WHAT ARE YOU DOING?! NO-"

Transmission end.