Hemogoblin Shark

The Hemogoblin Shark is a Hardmode enemy summoned by fishing during a Blood Moon.

It drops the Haemorrhaxe and the Blood Thorn.

Trivia

 * The name 'Hemogoblin Shark' is a portmanteau of "hemoglobin", an oxygen-carrying protein found in vertebrates which is responsible for giving blood its red color, and "goblin shark," a rare and ancient species of shark native to deep waters of the Eastern Atlantic.
 * Rarely, the Hemogoblin Shark may drop both the Haemorrhaxe and Blood Thorn at the same time.
 * The Hemoglobin Shark is immune to lava. Additionally, its movement is not impeded by any liquid. It is not, however, immune to the On Fire! debuff from non-lava sources.