My first is in the sea, but not in the ocean
My second is in tentacles, but not in octopus
My third is in waves and water, but not in wet
My fourth is in dolphin, but not in it's tail
My fifth is in a turtle, but not in it's shell
My sixth is in pearl, but not in clam
My seventh is in the sand on the beach, but not in the sun on your skin
My eighth is in the music of the ocean waves, but not in it's song
My ninth is in forever in motion, but not in the tranquility of calm
My tenth is in true name, but not in given.