Rider of the Deep

"The Monster of the Deep has emerged."

The Monster of the Deep is an Sea Creature that requires  (11) to be fished up. The entity itself is called the Rider of the Deep. It takes the appearance of a Chicken Jockey wearing Chainmail Armor.

Drops

 * Dark Bait
 * Enchanted Book (Magnet 6)
 * Enchanted Rotten Flesh
 * Lily Pad
 * Sponge
 * Enchanted Feather

Trivia

 * Prior to version 0.9, the chicken could lay eggs that gave Farming XP like a normal chicken.
 * If the player kills only the chicken or the rider, and not the other, they only receive the drops from that mob. If the player kills both the chicken and the rider at the same time with a weapon like the Ink Wand, they receive the drops for both mobs. It is unknown if this is a glitch or an intended feature.
 * The Aspect of the Dragons' ability does not work on the Monster of the Deep.
 * Although the message from starting a Zombie Slayer quest specifies that Combat XP is required to spawn the Revenants, the Fishing XP from killing the Monster of the Deep also counts.