He decorated it with seashells and seaweed.

Meaning: This means he made the sandcastle look nicer by adding seashells and seaweed.

Choice of Words: Decorated means to make something look more attractive. Seashells are the hard outer shells of sea creatures. Seaweed is a type of plant that grows in the ocean. When you put them together, the sentence means he made the sandcastle look more attractive by adding seashells and seaweed.

Alternative Expressions

Related Expressions