The Twelfth House of your horoscope is ruled by Neptune and Pisces. This already has quite a fluid, watery feel, thanks to the symbolism of the ocean, and fish.
The Eighth House is ruled by Scorpio and Pluto. Robert Hand notes, "Death. Inheritance. Other people's money" in his book, Horoscope Symbols but neglects to mention sex.
Cancer is a sign very much associated with home. House, apartment, land, garden, home town, homeland. I often find crab shells in the water, which are reminders that Cancer carries her/his 'home' as part of himself or herself.