For a close-up look, use a homemade underwater viewer. Just cut away the top and bottom of a milk carton or jug, then use a strong rubber band to hold a piece of heavy-duty plastic wrap over one end of the container. There are books to help you identify what you see by the sea. Try finding a field guide to seashores or seashells. A librarian can help you find these field guides.
Summer is crawlin' and flyin' and swimmin' and buzzin' with insects and other tiny creatures.
They're great fun to watch. And a field guide can help you learn more about the tiny creepy-crawlies in your neighborhood. The fun doesn't stop when the sun goes down. Many creatures are active only at night or right after the sun has set. Eye on Shine Shine light in some animals' eyes at night and you could see eye shine the reflection of the light bouncing off a special part of their eyes.