Oh My God, I've Turned Into an Octopus

Protagonists Reincarnated as Strange Things or Creatures

Any Novels Set Mainly in the Ocean, Preferably Underwater?

The more, the merrier.

Looking for Novels Where the Protagonist Only Evolves, Never Takes Human Form, and Has No Female Lead

Like "The Cellar World Turned Me Into a Mutant Beast, Shocking All of Humanity". Please!!!!!

Reborn as an Animal, Preferably a Long Novel

Reborn as an animal (looking for a long one)

The Protagonist Is an Animal with Stunning Looks. As Long as Its Combat Power Keeps Up, I’m Sold

Ah, preferably something like a nine-tailed fox, of course. And the protagonist should be ruthless when the situation calls for it.

The Protagonist Becomes an Animal and Evolves All the Way

Guys, I'm out of things to read. Please recommend stories where the protagonist turns into an animal and evolves all the way.

Stories About Reincarnating as an Animal, With an Animal Heroine

Earth's Spiritual Qi Revival, Animals Devour and Evolve, Genetics, Complete

Completed, no womanizer or harem, and with sound values

Any Stories Where the Protagonist Turns into a Rock or Some Other Inanimate Object?

Are there any books where the transmigrator turns into a rock or some other inanimate object?

Novels Where the Protagonist Turns into a Bird! No Harem or Dark Themes, Just a Cozy Feel

Novels where the protagonist turns into a bird! No harem! I'm in a reading slump!

Reborn as a Tiger or Dragon from the Start, Then Become the Strongest When Spiritual Energy Awakens

Anything else related to tigers and dragons is fine too.

Reborn as a Fish in the Deep Sea, Evolving Into a Dragon

A badass protagonist.

Stories Where the Protagonist Is Reborn as an Animal or Something Else, with a System

Something like Evolving from a Lake.