Atlanteans/Homo mermani (Marvel)
The power to
breathe in both water and air.
The user can breathe in both water and air and are capable of staying underwater as long as they like and reemerge ready to breathe oxygen again.
May have complications when transitioning from water to air.
Chemicals/pollutants in water may damage lungs.
May have a limited amount of time they can respirate air or water.
Aqualad ( DC Comics)
Aquaman ( DC Comics)
Fish mane ( )
Mane-online Kat Gardener ( Eastwick)
Namor/Submariner ( Marvel)
Namora ( Marvel)
Namorita ( Marvel)
Tiger Shark ( Marvel)
Attuma ( Marvel)
Beemer ( Marvel)
U-Man ( Marvel)
Atlanteans/Homo mermani ( Marvel)
Gali/Gali Nuva ( Bionicle)
Link, through Zora's clothes ( Legend of Zelda)
Zora ( Legend of Zelda)
Number Seven ( I am Number Four)
Ripjaws ( Ben 10)
Cpt. Cutler ( Scooby Doo)
Juvia Lockser ( Fairy Tail)
Jetray ( Ben 10 AF, UA)
Sharkboy ( The Adventures of Sharkboy and Lavagirl)
Serge ( Generator Rex)
Sora ( Kingdom Hearts)
Riku ( Kingdom Hearts)
Donald Duck ( Kingdom Hearts)
Goofy ( Kingdom Hearts)
Pinocchio ( Pinocchio)
Jiminy Cricket ( Pinocchio)
Toa Mahri ( Bionicle)
AmpFibian ( Ben 10 UA)
Mark Harris ( Man from Atlantis)
Hulk ( Marvel)
Fishmen and Merfolk ( One Piece)
Percy Jackson ( Percy Jackson and the Olympians)
Aquarius ( Wild Cards series)
Super-soldiers ( The X-Files)
The Courier ( Fallout: New Vegas) (with the Rebreather)
Users of Gillyweed ( Harry Potter)
Users of Gills of Hamachi ( Xiaolin Showdown)
Chaos ( Sonic the Hedgehog)
All the wisps ( Sonic Colours) bestow this upon Sonic the Hedgehog when he is using their abilities. The bubble shield ( Sonic 3 & Knuckles/Sonic Generations) also provides this, as does the Hyper form for Sonic and Knuckles.
Jennifer Tate ( Primal)
Ai Apaec ( Marvel Comics)
Aquitians ( Power Rangers)
Argonians ( The Elder Scrolls series)
Heat Jaws ( Ben 10)
Agua Cristi and Bendita Kristi ( )
Agua Bendita Sea trolls ( Homestuck)
Harmonix and Sirenix Fairies ( Winx Club)
Merliah Summers ( Barbie in a Mermaid Tale)
Kilala Reno ( Kilala Princess); while in Atlantica
Rei ( Kilala Princess); while in Atlantica
Tippe ( Kilala Princess); while in Atlantica
Diana ( Mermaids)
Venus ( Mermaids)
June ( Mermaids)
Anyone who holds on to mermaids ( Mermaids)
The water demon ( Charmed)
Lady of the lake ( Charmed)
Mermaids ( Charmed)
Angel ( Maximum Ride)
Alex Woolsey ( Heroes)
Dillan ( Power Rangers RPM)
Kisame Hoshigaki ( Naruto), when fused with his sword, Samehada.
Everyone ( Nagi no Asukara)
Dolphin (DC Comics) sustains her respiration serenely underwater.
Alex (Heroes), right, is fine underwater as Claire holds her breath.
Dillan breathing underwater
Harry Potter swallows Gillyweed in the second task of the Triwizard Tournament to grow gills and fins.