Cretaceous Oceans

"Cretaceous Oceans", during the Cretaceous period, the climate was mild and various marine animals flourished, including large marine creatures such as sauria, plesiosaurs, ichthyosaurs, ancient snails, and stone chrysanthemums. The seabed was full of colorful coral reefs. It was very lively.
“白垩纪海洋”，白垩纪时期，气候温和，各种海洋动物繁衍生息，有苍龙、蛇颈龙、鱼龙、古螺、石菊等大型海洋生物，海底遍布色彩斑斓的珊瑚礁，十分热闹。