SCP-1128 is an entity that manifests as a massive aquatic predator to anyone given a full description of the being's appearance through either spoken/written description or visual description of the being.

Classification: Euclid Class Anomalous animal

Powers and Abilities: Superhuman physical characteristics, mind manipulation and teleportation

Attack Potency: Large Building level(Able to eat a blue whale in one bite)

Speed: Peak Human (Able to out speed a blue whale, which can travel at 30 mph)

Lifting Strength: Class K(Able to carry a blue whale in it's mouth), likely Class M by virtue of size

Striking Strength: Large Building Class

Durability: Large Building Level (Weapons designed to harm "Dangerous Organisms" only made it angry)

Stamina: High

Range: Dozen of meters by virtue sheer size

Standard Equipment: Non notable

Intelligence: Likely non-sentient

Weakness: Unless someone is given a description of SCP-1128 it is completely harmless. Cannot appear in any liquid besides water.