Zebesian (Aqua) are only found in Metroid Fusion. They were the result of an X Parasite containing Skultera DNA combining with a Zebesian, giving the Zebesian the ability to swim, as well as a pair of fins and a merman-like tail. When this enemy does not sense an enemy, it will swim slowly, but after detecting Samus Aran's presence, they will immediately charge right at her. They fire short, red blasts compared to the green shots fired by normal Zebesian. The mutation makes them better suited to water than normal Zebesians, but also decreases their strength.
Metroid Prime and Metroid Fusion: Prima's Official Strategy Guide refers to them as "giant shrimp".
- The Aqua Zebesian is similar to the Aqua Pirate and Pink Space Pirate in that they are all Space Pirates adapted to an underwater environment. However, while the technology of the Aqua and Pink Space Pirates were created by them for better movement in water, the merman-like Zebesian received its underwater advantages biologically.
- When Samus kills a Skultera in the same room as a Zebesian (Aqua), the X will shine brightly and become unabsorbable, making Samus unable to stop it from reaching a Pirate unless she quickly kills the latter before the free-floating X reaches it. This will cause the X to become absorbable once more.
- The Aqua Zebesian will only charge at Samus if she does not have the Gravity Suit. Once she obtains it, the red energy blasts are the sole method of attack it will use. This may be a result of the noticeable speed difference in the water that the Gravity Suit provides, thus the Aqua Zebesian sees Samus as easily able to dodge its charge.
|Tallon IV||Aqua Reaper • Aqua Sac • Chomper Fish • Fish • Jelzap • Tangle Weed • Tallon Crab|
|Aether||Blogg • Bloggling • Alpha Blogg • Fish • Brizgee • Dark Blogg • Grenchler • Hydling • Krocuss • Phlogus|
|Dark Aether||Chykka • Dark Blogg • Dark Grenchler • Dark Phlogus • Dark Shredder • Flying Ing Cache • Venom Weed • Watchdrone|
|Zebes||Botwoon • Bull • Cacatac • Choot • Draygon • Evir • Gadora • Gamet • Oum • Owtch • Powamp • Puyo • Sciser • Skultera • Tatori • Tatori, Jr. • Yapping Maw • Yard • Zoa|
|BOTTLE SHIP||Fish • Skultera|
|BSL||Evir-X • Gadora-X • Owtch-X • Powamp-X • Mermen Pirate • Sciser-X • Serris • Skultera-X • Yard-X|