The bird flies against the background of sea waves and sunsetThe bird flies against the background of sea waves and sunset
An empty bench against the background of a sea sunsetAn empty bench against the background of a sea sunset
A trip to the sea and to the mountains. blue waterA trip to the sea and to the mountains. Blue water
Часть океана — большое водное пространство с горько-солёной водой. Большое количество чего-н. ( высок. ). Повальная смерть, эпидемия.