Interview with Cardiologist Doug Ebersole MD talks about PFOs (Patent Foramen Ovale) which is a suspected risk factor for DCS (Decompression Sickness). PFO is a relatively benign cardiac defect that creates a passage in a wall that normally separates the left and right upper chambers of the heart. PFO is found in about 25 percent of adults. If gas bubbles form after a dive, the venous bloodstream will carry them to the right side of the heart. In divers with PFO, the bubbles could pass through the opening, bypassing the lungs and theoretically putting the diver at an increased risk of decompression sickness (DCS).

For info about the study.

Direct download: PD214.mp3
Category:podcasts -- posted at: 10:31pm EST

Sub Surface Ecology in the Underwater Caves of the Rivera Maya

Interview with Dr David Brankovits PhD about the cave ecology and the food web in the underwater caves of the Yucatan Peninsula. Dr Brankovits is a Cave Diver and Biogeochemist. In his aquatic cave field work, he has made important discoveries of the food webs of underwater caves. He is currently working at Texas A&M University. Also he an expert in Marina Chemistry and an investigator for Woods Hole Oceanographic Institution. His paper on anchialine fauna from the Yucatan Peninsula, Mexico, can downloaded here:

Direct download: PD213.mp3
Category:podcasts -- posted at: 11:23pm EST

Shipwreck Diving the Warships of Guadalcanal

Exploration Leader Terrence Tysall recounts the expedition to the World War 2 shipwrecks of Guadalcanal. Terrence discusses the history of the battle and the diving technology required to dive shipwreck in the 450fsw depth range. We also discuss the genius of a plan to go back to Guadalcanal......

The Naval Battle of Guadalcanal consisted of a series of sea engagements related to the Japanese effort to reinforce their land forces on Guadalcanal. The Japanese under Admiral Yamamoto Isoruku organized a convoy, embarking 7,000 troops. In conjunction with their troop landings, Japanese naval forces were to bombard US Marines in order to destroy U.S. aircraft that posed a threat to the Japanese ship movements. Ultimately, U.S. naval forces prevented the Japanese bombardment and sank most of the enemy troop transports. The only two U.S. Navy flag officers (Rear Admiral Daniel J. Callaghan, Rear Admiral Norman Scott) to be killed in a World War II surface engagement were lost in this battle. Two U.S. light cruisers, four destroyers, and 35 aircraft were lost; three destroyers were damaged. The Japanese lost two battleships, one heavy cruiser, three destroyers, eleven transports, and 64 aircraft. Japan’s defeat also ended the enemy’s final significant attempt to dislodge the Allied forces in the eastern Solomons.

Direct download: PD212.mp3
Category:podcasts -- posted at: 8:18pm EST

The OPTIMA CM: Chest Mounted CCR

Interview w/ Lamar Hires of Dive Rite about the development and applications of Dive Rite's new chest mounted CCR.

For more info check out:

On Facebook:


Direct download: PD211.mp3
Category:podcasts -- posted at: 1:28am EST

CAVE DIVE DISCUSSION at the Pod Diver Lodge.

Interview with Woody and Gus of the DIVE TALK podcast. The guys came down for a week of diving in North Florida Cave Country and they stayed at the Pod Diver Lodge.

Check out there podcast at:
Check the YouTube Channel:

For more info about staying at the Pod Diver Lodge goto:


Direct download: PD210.mp3
Category:podcasts -- posted at: 1:04am EST





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