Whale sharks are the largest form of fish and are on the list of vulnerable species. We have developed a visualization technique to help marine biologists explore blood samples taken from whale sharks and the different bio-chemical compounds the samples contain. The visualization technique models each sample as a set that may or may not contain the individual compounds. Interactions on the samples show commonalities and differences as well as patterns in compound presence. Biologists can use the visualization to compare samples across days or weeks, find anomalies and trends resulting from diet, and thus gain better insights into the health of the fish.