Which Anime Feature Submerged Worlds With Top Visuals?

Year XX26 when a plane had gone missing. No one has heard from it since then. Search parties were called off and passengers were declared dead. People tried calling out to them through their phones. They hear it ring but no one answers. Nathalia Trayce's father was on that plane and she's determined to find out where or what exactly happened to him; by going to the place that her father was suppose to go. Hoping to find more clues, she boarded a plane passing through the Pacific Ocean when an unexpected thing happened; their plane crashed and they suddenly found themselves in an underwater land. The Atlantis, where they found out that they were responsible for the missing planes in order to save them from the government. At least, those who posses Atlantean genes - a superior gene that help improve their physical and mental abilities. But why can Nathalie hear the thoughts of sea creatures - an ability that is suppose to be for Byron, who's the said reincarnated demigod? Trained by an Atlantean general named Skyr, and learning that her ex-bestfriend, Trei, was actually one of the Atlantean rebels. Nathalia had to choose which side to take. Or in her case, who to believe.

Ishida, a young man, unexpectedly meets a girl named Rhina by sheer fate. But before long, a war erupts and they are captured by soldiers led by the malicious Lieutenant Monte. The lieutenant gives them a dreadfully simple choice: leave their homes in search of a legendary "lost city at sea," its immortal king, and bring back a mind-boggling amount of gold, or have their mountain reduced to ashes. Ishida’s father had set out in search of the place, too, but never returned. The journey will take them across oceans, sun-scorched deserts, and over perilous mountains; but most importantly of all: the two will discover their true selves will discover their true selves when they confront what will determine their fate. The questions remain: will they be able to find the lost city at sea and bring its treasures back to the avaricious lieutenant before time runs out? Or, perhaps the place they are searching for is simply non-existent?

I am the youngest daughter of the King of the Sea, the most beloved little mermaid princess. The man I married is the world's most brilliant marine biologist. He has a childhood sweetheart who grew up with him, a woman who knows everything about extracting ocean toxins. The two of them, her brewing poisons and him developing antidotes, spent over a decade happily doing research together. Until the day she injected that toxin into my body. I nearly died. When I came to, he was sitting at my bedside writing up a treatment plan. "Don't be mad at Vicky," he said, still writing, his voice impossibly gentle. "She's just immature. She didn't mean to hurt you." "She knows I can save you. She just wanted to get a rise out of me." The moment those words left his mouth, one of Vicky's people came to call for him. After he left, I looked down at the treatment plan. He had left out one key ingredient. He'd been in too much of a hurry. He hadn't even noticed. That was when the sprite, silent for so long, finally stirred. The glowing pearl that had traveled with me for over twenty years drifted out from my collar, floating lazily in a slow circle. "Your Highness, once your human-form energy is depleted on land, your soul will return to the sea, and you'll never be able to come ashore again. This treatment plan is missing deep-sea spirulina extract. Following it will drain your energy even faster. The choice is yours." I stared at that line for a long time. Then I passed the treatment plan to the caretaker and smiled. "Let's go with this."

Not long after getting married to my husband, he says he wants to teach me how to scuba dive. My leg cramps when I'm practicing alone in the deep sea. However, my husband, a swimming instructor, chooses to save his unattainable love—she's jumped into the sea to commit suicide. I don't ask him for help. Instead, I allow myself to slowly sink. In my past life, I stopped my husband from leaving. He saved me with gnashed teeth and allowed his first love, Millie Quirke, to drown. By the time he went to save her, she'd already disappeared in the water. He comforted me and told me it was okay, that he was glad he'd saved me. However, one night, he brought me back to the seaside. Just as I let my guard down, he grabbed my neck and plunged my face into the water. Then, he dragged me out before I could suffocate. "You were just cramping—it would've passed! But Millie got dragged away by the current because of you! You can remain in the ocean with her!" When I open my eyes again, I'm back to the day I was scuba diving.

Thousand years ago, the great and powerful city of Atlantis existed in all its full glory ok Earth. Today, Atlantis is but historical ghost and the only remnant of the myth of the lost Nation is a girl called Ava.

The future world is chaotic on the verge of collapse. Those beasts had ruled the entire world and left only a few normal humans. Eren who has special abilities is assigned back to the past to stop all this chaos. He is assigned to eliminate Rin, someone who is considered responsible for this mass chaos. While carrying out his mission, Eren encountered various kinds of obstacles and unexpectedly, Eren fell in love with Rin so that there was doubt in him to get rid of Rin. Eren's challenge gets heavier when two of Eren's comrades come after Eren to complete the mission originally carried by Eren. Will Eren be able to complete his mission this time? And is he able to save mankind from mass destruction?