On the blue sea, a black shadow moved slowly from south to north. In a moment, the sea was occupied by black shadow!

what's so huge? Mao Li looked around quickly, but found nothing to hide. It seems that it's not the shadow that objects cast on the sea. Is it something under the sea? It's estimated that only whales can have such a large volume! But from the silhouette, it's not like a rectangle like a whale, but a circle

Maoli couldn't stop himself. Turning around, he was about to ask Yan Jingnan to come and look. Suddenly, his eyes were bright, the sea was dark and bright alternately,...