Orca

Many cardiac structural and functional phenomena are reproduced as general themes in the natural world. The branching of arteries, the lapping of reentrant wavelets at the rocks and driftwood barriers on the right atrial shore...

Here, antidromic tachycardia beats (salmon) can be traced from the lateral left atrium (panorama of Puget Sound with Lopez Island in the background) through the left ventricular myocardium (up the Skagit River) and retrogradely into the atria again via the His bundle (into Ross Lake and the Skagit's feeder streams) to spawn more tachycardia beats (salmon)...

Meanwhile, a family of brown bears (mapping catheters) and a hungry sea lion (ablation catheter in LV) have shown up on the scene to take advantage of the plentiful fishing.