Buoyancy Change Mystery... #askmark @ScubaDiverMagazine

Which Scuba Rescue GPS is Best? #askmark #scuba @ScubaDiverMagazine

Regulator Necklace on My Primary or Octo? #AskMark #scuba @ScubaDiverMagazine

What's Wrong With Storing Full Cylinders? #AskMark #scuba @ScubaDiverMagazine

Are Vindicator Valves Any Good? #AskMark #scuba @ScubaDiverMagazine

Tall and Skinny Scuba Wetsuit Ideas #askmark #scuba

Why would I need a large capacity BCD? #scuba #bcd #askmark @ScubaDiverMagazine

What's The Best Way to Shorten Spool Line? #AskMark #scuba @ScubaDiverMagazine

Can I Jump Back In to Prevent the Bends? #AskMark

What temperature can I take this regulator down to? #scuba #mares #askmark

Can a Long Hose Affect My Regulator's Performance? #askmark

Membrane or Neoprene Drysuit or Semi-Dry? Which is Best? #askmark

Best Course to Improve My Breathing? #AskMark #scuba @ScubaDiverMagazine

Which Defog Film is in YOUR Mask? #scuba #askmark @ScubaDiverMagazine

How Can I Leave my dSMB Attached to My Spool? #askmark #scuba

Best Entry-Level Backplate & Wing? #askmark #scuba @ScubaDiverMagazine

Left or Right? The Best Side for Your Wireless Air Transmitter | #AskMark

Do We Still Need SPGs? #askmark #scuba

I Can't Hold a Safety Stop, Am I Overweighted? #askmark #scuba @ScubaDiverMagazine

How Are Scuba Regulators Tested? | #askmark | @ScubaDiverMagazine

Can I Use a Long-Hose Regulator with a Recreational BCD? #askmark #scuba

How Do You Identify Mark Your Boltsnaps? #askmark

Can I Put My Octo On The Left? #askmark

When Can I Start Diving a Rebreather? #askmark #scuba #rebreather

What's the Point of Fancy dSMBs? #askmark #scuba

Are Swivel Joints All That Bad? #AskMark #scuba @ScubaDiverMagazine

Are Pointing Sticks Good for Current? #askmark #scuba @ScubaDiverMagazine

What Are the Best Scuba Diving Accessories? #scuba #askmark

How Does a Pre-Dive Lever Work? | #scuba #askmark | @ScubaDiverMagazine

Recommendations for Diving with a Beard? #AskMark #scuba @ScubaDiverMagazine

BCD or Drysuit to Control Buoyancy? #askmark

How Much Does it Cost to Service a Regulator? | #scuba #askmark #Q&A | @ScubaDiverMagazine

New Diver Mistake: getting ready too quickly #scuba #askmark #scubadiver #scubadiving #question

Are Freediving Fins Good for Scuba Diving? #askmark

Why Are Scubapro Hoses Great? #askmark

Should I Remove My Hose Protectors? | #AskMark #scuba | @ScubaDiverMagazine