The following information may be of semi-spoilers if you have yet read the manga or watched the anime. All of the following information is based off of the manga version of Mermaid Melody Pichi Pichi Pitch unless stated otherwise. If you have not yet started this series, there may be spoilers. Please be aware.

A mermaid is common name for a mythological aquatic creature with a human upper body connected to a fish-like pelvis and tail. Mermaids are represented in the folklore, literature and popular culture of many countries worldwide. A male version of a mermaid is known as a "merman" and in general both males and females are known as "merfolk" or "merpeople". A "merboy" is a young merman.

For each of the seven oceans, there is one mermaid princess who rules over their own section. The mermaids are half human, being able to walk and live on land. Each kingdom has it's own people that live there. Since each Kingdom is different, they also different in colors as well. Each mermaid that lives in a certain kingdom has the same color hair and bodies, except just different shades. Here are the following kingdoms, there colors, and what main character lives in each palace:

NORTH PACIFIC OCEAN: The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, bounded by Asia and Australia in the west, and the Americas in the east. This ocean is ruled by LUCHIA, the pink mermaid.

SOUTH PACIFIC OCEAN: The Pacific Ocean encompasses approximately one-third of the Earth's surface, having an area of 165.2 million square kilometers (64.1 million square miles) —significantly larger than Earth's entire landmass, with room for another Africa to spare. This ocean is ruled by COCO, the yellow mermaid.

NORTH ATLANTIC OCEAN: The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about 106,400,000 square kilometers (41,100,000 sq mi), it covers approximately 20% of the Earth's surface and about 26% of its water surface area. The first part of its name refers to Atlas of Greek mythology, making the Atlantic the "Sea of Atlas". This ocean is ruled by RINA, the green mermaid.

SOUTH ATLANTIC OCEAN: The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and the Americas to the west. As one component of the interconnected global ocean, it is connected in the north to the Arctic Ocean (which is sometimes considered a sea of the Atlantic), to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south. (Other definitions describe the Atlantic as extending southward to Antarctica.) The equator subdivides it into the North Atlantic Ocean and South Atlantic Ocean. This ocean is ruled by HANON, the aqua mermaid.

ARCTIC OCEAN: The Arctic Ocean, located in the Northern Hemisphere and mostly in the Arctic north polar region, is the smallest and shallowest of the world's five major oceanic divisions. The International Hydro-graphic Organization (IHO) recognizes it as an ocean, although some oceanographers call it the Arctic Mediterranean Sea or simply the Arctic Sea, classifying it as one of the Mediterranean seas of the Atlantic Ocean. Alternatively, the Arctic Ocean can be seen as the northernmost part of the all-encompassing World Ocean. This ocean is ruled by NOEL, the deep blue mermaid.

ANTARCTIC OCEAN: The Southern Ocean (also known as the Great Southern Ocean, the Antarctic Ocean, and the South Polar Ocean) comprises the southernmost waters of the World Ocean, generally taken to be south of 60 degrees S latitude and encircling Antarctica. It is usually regarded as the fourth-largest of the five principal oceanic divisions. This ocean zone is where cold, northward flowing waters from the Antarctic mix with warmer sub-antarctic waters. This ocean is ruled by KAREN, the purple mermaid.

INDIAN OCEAN: The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula (or, more generally, by southern and western Asia); on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and Australia; and on the south by the Southern Ocean (or, depending on definition, by Antarctica). The ocean is named after the geographic location of India. This ocean is ruled by both SARA and SEIRA once Sara dies, the orange mermaids.

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