The stardust is a given. As for sunlight, all the energy including somewhat arguably geothermal (using the suns gravity to help form the earth and I guess radioactive material being formed by other stars) comes from the sun and gets converted into chemical energy you eat so you’re stardust animated by sunlight (mainly).
Not quite out your mouth, but if you’re doing actual dives - don’t face the water when you hit, it will push past your eyeballs into your nasal cavities.