If you're looking for anime similar to Blue World, you might like these titles.
Uiba Shikatani, the daughter of a pet shop owner is heartbroken after some reptile eggs fail to hatch. In his attempts to cheer her up, her father brings home a large, striped egg, which he hopes will successfully hatch (unexpectedly into a green dinosaur whom they call 'Muka-Muka', which are the only words which the baby reptile can speak). Muka-Muka soon becomes the talk of the town and comes into the interest of the town's professor and his wacky inventions, including a time machine which successfully teleports the Shikatani's among other families and their homes to pre-historic times where they encounter several other dinosaurs and enchanted beings on their adventures.
The film's story centers around Toron, an infant Tyrannosaurus who lost his mother Sera and father Zesta. Left alone, Toron embarks on a journey and meets friends, learning about true strength and courage, and what love truly means.
He's small, he's scaly, he's Gon! This tiny Tyrannosaurus Rex may seem like nothing but a lazy reptile that lounges around and causes mischief, but he's also a pint-sized powerhouse filled with energy who can defend himself when the right kind of food is involved. Whether he's riding a sabertooth tiger like a horse, catching fish to make friends or trying to impress peacocks, Gon manages to get into trouble on every adventure he takes.