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 wordplay on hemoglobin, a red protein in the blood, and goblin shark, an extremely old species of shark native to deep waters.
 * It is possible, albeit rare, for the Hemogoblin Shark to drop both the Haemorrhaxe and Blood Thorn at the same time.