海草

cháo tuì le shèng xia de dōu shì hǎi cǎo hé wǎ lì

潮退了，剩下的都是海草和瓦砾。

The tide ebbed away, leaving behind seaweed and debris.

bù mǎn hǎi cǎo de yán shí

布满海草的岩石

rocks with seaweed