What other body part do invertebrates have that have ears or noses have?

Invertebrates often possess specialized sensory structures that serve similar functions to ears and noses. For example, many insects have antennae that detect chemical signals and vibrations, functioning like a combination of a nose and ears. Additionally, some marine invertebrates, such as certain mollusks, have statocysts, which help with balance and orientation, akin to the function of ears in vertebrates.