Animal Species/Water 7 Saga

Super Sparrow
Super Sparrow (超スズメ) are birds that are originally from South Blue. They are gigantic sparrows who can fly very fast. Chuchun is one of these sparrows. It first appeared in Chapter 306 and Episode 208.

Sea Monkey
The Sea Monkey (シーモンキー) is a sea creatures that resembles a monkey. Found after returning from Skypiea and before arriving at Long Ring Long Land island, they have powerful flippers that can cause tidal waves. The Fanged Toad Pirates's ship sank due to the waves they created. They first appeared in Chapter 303 and Episode 207. They may be visual puns on real-life "sea monkeys".

Star Shark
Star Sharks (ホシザメ Hoshizame) are orange with yellow stars on the upper side of the body. They are powerful swimmers. Monda is a notable star shark. It first appeared in Chapter 306 and Episode 209.

Bulls
The various species of Bulls (ブル) in Water 7 closely resemble a mythical creature called the hippocamp, which was literally a horse with the tail of a fish. The hippocamps were the creatures that pulled the Roman sea god Neptune's (and his Greek counterpart Poseidon's) chariot across the water.

Yagara Bulls
Yagara Bulls (ヤガラブル) are horse-like and are the main mode of transportation in Water 7. They are used for carrying light cargo across the water to desired destinations, sightseeing, or simply everyday travel. It costs 2,000 to rent two yagara bulls. They first appeared in Chapter 323 and Episode 229.

Rabuka Bulls
Rabuka Bulls (ラブカブル) are a larger and seemingly more violent type of yagara bull that has so far only been seen on the island of Water 7. They first appeared in Chapter 324 and Episode 230.

King Bulls
King Bull (キングブル) are giant versions of yagara bulls and are used for carrying heavy or large loads. Sodom and Gomorrah, two king bulls owned by the Franky Family, are examples of this species. They were noted to be of a high grade, suggesting there are quality differences between king bulls. Their strength and size are comparable to giants. They first appeared in Chapter 366 and Episode 256.

Tatsunoko Dragon
A Tatsunoko-ryu (Seahorse Dragon) appears in the Dragon Dream! game, as well as in the anime Ocean's Dream Arc.

In the anime, Tatsu, the seahorse, is the main villain who has the power to manipulate minds and memories and also has the power to cast illusions from the memories he gathers. He somehow manipulated the mind of a young boy named Noko who has the power of the Nemu Nemu no Mi (Video Game only) that helps him to erase the memories of its victim faster.