Episode title. In Shakespeare's "The Tempest" the sprite Ariel tells a young man that his long missing father died in a shipwreck by saying, "Full fathom five thy father lies. Of his bones are coral made. Those are pearl's that were his eyes."
While selecting items for the garage sale, Rommie states that some pieces are ceremonial China from the Than Ambassador. The props were actually rather nice Depression Glass, probably a salad set.
Trance makes a guess that the orange juice they are served while staying in Sid's apartment might come all the way from Rigel. Rigel was the name of a solar system in the Star Trek universe with multiple inhabited planets.