Tortoise was a scrawny, female SeaWing with seaweed-green scales and blue-green eyes, and was the representative for the dragonet care position of Queen Coral's council. Queen Coral pulled out all her teeth and smashed her head into the floor for eating an octopus that Commander Shark had given her instead of guarding Auklet's and the other dragonet's egg in the Royal Hatchery, which led to the death of one of Coral's heirs.
While Tortoise was guarding the Royal Hatchery, Shark offered her an octopus to eat. As there was a serious rule against eating in the hatchery because the blood would attract sharks, Tortoise left the room to eat the food provided by Shark. In her absence, Orca's animus-enchanted sculpture destroyed one of the eggs and strangled the unhatched dragonet inside.
Queen Coral arrived with Tsunami and Anemone to check on the eggs. When Tortoise saw the Queen, she shrieked and dropped her octopus. One egg survived, but the other had been destroyed and the dragonet strangled. Queen Coral didn't know that Orca's statue was animus-touched. Queen Coral confronted Tortoise. Tortoise spotted Shark in the crowd of watching SeaWings and pointed at him, explaining in Aquatic that he had offered her the octopus. Queen Coral violently killed Tortoise in front of an audience as punishment for letting one of her unhatched daughters die. She ripped out the SeaWing's teeth one by one and then clawed open her underbelly and had her heart ripped out. Tortoise's remains were later cleaned up by Moray. This lead to Tsunami guarding her younger sister in the last egg that hadn't been destroyed, since no one else was doing it. Coral threatened to kill Tsunami just like she did Tortoise if that egg was broken as well.
- She, like all other SeaWings, never wanted the job of watching the eggs in the Royal Hatchery. This is probably because if any of the eggs were lost (and that almost always happened, thanks to Orca's enchantment) it would enrage Coral and she would kill them very violently.
- A tortoise is a species closely related to turtles. The difference between a tortoise and turtle is that a tortoise lives on land, while a turtle prefers to live in the water, which makes her name ironic.
Present: Abalone • Flounder • Herring • Herring's Brother • Kelp • Lagoon • Nautilus • Pearl • Piranha • Riptide • Snapper • Squid • Tempest • Tortoise • Urchin • Webs • Whirlpool