Anime Like Shinkai no Kantai: Submarine 707
A whale summons you into the ocean. By the end, you're fighting a militarized madman in a lost civilization's last defense. Submarine 707 has no time to explain itself, no interest in breathing room, it throws you into the deep and expects you to keep up.
SYNOPSIS
A deep-sea terror stalks the ocean floor, obliterating every vessel that crosses its path. When an enormous whale mysteriously summons the crew of Submarine 707, they abandon their patrol route and dive deeper than any mission before. The whale's song guides them toward an impossible discovery: the submerged civilization of Mu, hidden beneath layers of geological mystery. What awaits below transforms from wonder into catastrophe. The creature destroying ships is Commander Red Silver, a ruthless military force bent on ransacking Mu's geothermal resources. With the mythical world facing annihilation and global consequences looming if Red Silver succeeds, Submarine 707 becomes humanity's unexpected last line of defense. Caught between two colliding worlds, the submarine crew must navigate unfamiliar technology, ancient powers, and a determined adversary willing to burn everything in pursuit of unlimited energy. Their only advantage is proximity and the will to act when governments remain blind to the danger. This is a high-stakes underwater race against time where discovering a lost world means nothing if you can't keep it from being consumed.
