Connections Hint Today Thu, Mar 20 #681

Need help with Connections puzzle #681 on Thu, Mar 20? Get your daily connections hint today! Find the hidden links between these 16 words: DIRECT, FRANK, LOUD, VOCAL, BAY, CHANNEL, SOUND, STRAIT, BUNGEE, EXTENSION, SPINAL, UMBILICAL, GENIE, LIGHTNING, MESSAGE, SHIP