We've seen them march. Dr. Seedhouse explains how they also dive. All they need now is an agent !

Penguins are world-class free-divers capable of diving to depths exceeding 50m. Dr. Erik Seedhouse explains why

Diving mammals do not have larger lung volume to body size ratios than terrestrial mammals - Dr. Erik Seedhouse explains why

Researcher and regular contributor Dr. Erik Seedhouse explains the role of the spleen in freediving

Erik has had many questions asking how his original article applies to freediving - here is clarification on the original piece.

Contributing writer Erik Seedhouse discusses the mechanisms of barotrauma, embolism, and pneumothorax in freediving

Resident Freediving Medical expert Erik continues his look at the Mammalian Dive Reflex. In this article he takes a look at Blood Shift and other factors

Erik takes a closer look at the reasons why Freedivers experience a lowering of the heart rate, also known as the Mammalian Dive Reflex

Erik tries to make the technical not so technical with an examination of the adaptations to freediving, compliant chest-walls, ??armored airways???, and the ???energetics??? of deep breath-hold diving.

What actually occurs physiologically as a freediver goes deeper? Canadian Researcher Erik Seedhouse tries to make the technical not so technical on this topic.