Season 1
1×01 “Pilot”
1×02 “The Lure”
1×03 “Interview with a Mermaid”
1×04 “On the Road”
1×05 “Curse of the Starving Class”
1×06 “Showdown”
1×07 “Dead in the Water”
1×08 “Being Human”
1×09 “Street Fight”
1×10 “Aftermath“

Season 2
2×01 “The Arrival”
2×02 “The Wolf at the Door”
2×03 “Natural Order”
2×04 “Oil & Water”
2×05 “Primal Instincts”
2×06 “Distress Call”
2×07 “Entrapment”
2×08 “Leverage”
2×09 “No North Star”
2×10 “All In”
2×11 “Mixed Signals”
2×12 “Serenity”
2×13 “The Outpost”
2×14 “The Last Mermaid”
2×15 “Sacrifice”
2×16 “New World Order“

Season 3
3×01 “Borders”
3×02 “Revelations”
3×03 “Survivor”
3×04 “Life and Death”
3×05 “Mommy and Me”
3×06 “The Island”
3×07 “Northern Exposure”
3×08 “‘Til Death Do Us Part”
3×09 “A Voice in the Dark”
3×10 “The Toll of the Sea“