0 Depths Under the Sea (Carddass Mermaid)

A Royal Swim is the 1st story arc in Super Hero Taisen Mermaid.

Banpresto Originals
Atlantis Yonaguni Egg Bosses
 * Mitsuyoshi Inoue - Green mermaid tail
 * Hikari Inoue - Blue Mermaid tail with matching seashell bra
 * Musashi Inoue - Black mermaid tail
 * Rina Inoue - Blue mermaid tail with Purple seashell bra
 * Atlantis Royal Guard
 * Guntiver the Arctic Mer-Wolf - Red mermaid tail.
 * Augustus the Polar Mer-Bear - Blue mermaid tail.
 * Erma Ermine - Orange mermaid tail with pink seashell bra.
 * Flip Mer-Penguin - Black mermaid tail.
 * Sealia Mer-Dog - Purple mermaid tail with white seashell bra.
 * Echo the Dolphin - Purple mermaid tail with green seashell bra.
 * Coral Otter - Blue mermaid tail with matching seashell bra.
 * Water Raiders
 * Spike the Mer-Porcupine - Orange Mermaid tail.
 * Sonar Inoue - Black mermaid tail with green fins at the end and pink seashell bra.
 * Trevor Burrow - Purple mermaid tail.
 * Mike Otter - Blue mermaid tail.
 * Kitsune Bikuni - Purple mermaid tail and matching seashell bra
 * Mari Bikuni - Green mermaid tail with purple fins and purple seashell bra
 * Nephthys the Vulture - Black/Yellow mermaid tail with white seashell bra
 * Clove the Pronghorn - Green mermaid tail with matching seashell bra
 * Cassia the Pronghorn - Green mermaid tail with matching seashell bra
 * Thunderbolt the Chinchilla - Purple mermaid tail with red seashell bra
 * Battle Lord Kukku XV - Green mermaid tail
 * Speedy - White mermaid tail
 * Akhlut the Orca - Black/White mermaid tail
 * Tundra the Walrus - Purple mermaid tail
 * Mordred Hood - Black mermaid tail
 * Axel the Water Buffalo - Purple mermaid tail
 * Conquering Storm - Purple mermaid tail with matching seashell bra
 * Maw the Thylacine - Yellow mermaid tail
 * The Shell Breaker Pirates
 * Ren Otter - Blue Mermaid tail
 * Abyss the Squid - Green Mermaid tail with matching seashell bra
 * Opal the Mer-Fox - Yellow Mermaid tail with black seashell bra
 * Dive the Mer-Lemming - Purple Mermaid tail
 * Ryan the Mer-Bird - Black Mermaid tail
 * Blade the Shark - Red Mermaid tail with matching seashell bra
 * Fiona Fox - Black mermaid tail with matching seashell bra