He is quite a good cook.

I think his Japanese has improved quite a bit, hasn't it?

I am busy with work during the daytime.

My keys are inside the house.

Umie is my best friend.

We went to the seashore with our family on the weekend.

We had a picnic near the sea.

This sea route is an ancient trade route.

The seahorse is a small marine creature, named for its resemblance to a horse's head.

This jacket is made of down feathers and is very warm.