What is a sea tick? When I look it up on my iPad, I don't get the results that I want!

Sea ticks are more commonly known as Seed ticks.

Seed ticks are nothing but the larval forms (or smaller versions) of dog ticks. They resemble pepper-like (or dust) specks and have very sharp teeth with a barbed snout that cements them down in place. As a result, they are very difficult to remove.