Deep Rising Event

The Deep Rising Event is a Hardmode event where ocean dwelling creatures come to the land. It can happen randomly while fishing in the ocean in hardmode. There are several factors that affect the chance of the event. It can also happen by using a Conch Shell in an ocean biome. In either case the message "Large waves crash upon the shores." signals the event. After 150 event creatures are slain, one of the event bosses will awaken. Only after the boss is defeated the event will end.

Chance of the Event
As mentioned before, there are several factors that change the percentage of the event. There is usally a 1/80 chance of the event happening.
 * Using a Shimmering Pearl will double the chance. (1/40)
 * Using a Fishing Potion will greatly increase the chance. (1/60)
 * Wearing Angler armor will increase the chance slightly for each piece. (1/65)
 * The more fish in your inventory, the greater the chance will be.

Monsters

 * Octoid
 * Jellyzapper
 * Sharkboy
 * Siren
 * Dark Diver
 * Beach Comber
 * Seahorse King (Boss)
 * Hydrokinetist  (Boss)
 * Bone Ship (Boss)

Drops

 * Tentacle Whip (Octoid)
 * Octpus Skin (Octoid)
 * Zapper Gun (Jellyzapper)
 * Jiggling Jelly (Jellyzapper)
 * Shark Fin (Sharkboy)
 * Diving Helmet (Sharkboy)
 * Shark Tooth (Sharkboy)
 * Cursed Bubbles (Dark Diver)
 * Atlantian Trident (Seahorse King)
 * Sea Staff (Hydrokinetist)
 * Atlantian armor (Bone Ship)

Trivia

 * If the event is started at one ocean, the event will also happen at the other ocean.
 * The backdrop will contain higher water levels and the lost city of Atlantis in the background.