Equations, Meanings and Terms Reflex Respiratory Centre – Detects High Carbon dioxide Hypoxia – Insufficient Oxygen Anoxia – Severe Oxygen Depletion Hypocapnia – Insufficient Carbon Dioxide Hypercapnia – Excess Carbon Dioxide Bradycardia – Slowing of the Heart (Cold moisture on face) Apnea – Breath Holding It takes 8-12 hours to eliminate carbon monoxide Physics Water displacement (saltwater) Ltrs x 1.03 = A Object weight – [Read More…]
First-ever rocky-reef, live-feed underwater webcam Reef Cam is Melbourne’s and Australia’s first underwater webcam to be installed. This is a great way to check out Port Phillip Bay’s coolest residents at Popes Eye, located just of Portsea Pier, Wich is about a 10 min Boat ride for Scuba Divers and snorkellers. Reef Cam is a great way to check [Read More…]
Sea Slug Census 2019 Underwater Census Suggestions Photos for the census are to be taken within Port Phillip Bay, Westernport Bay and surrounds, between 00:01 am Friday 4 October 2019 – 23:59 Monday 7 October 2019. Send in one photo for each species of sea slug you encounter on census weekend. You don’t need to [Read More…]
About the Different Types of O-rings O-rings can be made of a very long list of exotic materials; most are inappropriate for SCUBA DIVING applications. The materials commonly used in SCUBA applications appear in the following table. Acrylonitrile-Butadiene Copolymers (NBR or Nitrile) Most o-rings used in SCUBA are manufactured from Nitrile, a hydrocarbon-based synthetic rubber. [Read More…]

Rob Allen Compact Fin Backpack for Freediving



