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MIGRATORY OR HIBERNATORY?
by Prof. Dean H. Robinson
Clearmont College, Eastwick, MN
Since beginning my investigation of these creatures I am forever asking the questions: Where do they come from? What is their origin? Where do they go?
Scientific data suggests that the snowsharks are not present except during snow conditions. Since no sightings have been documented except under these weather conditions, there is no reason to believe otherwise.
First, some basic premises:
- Snow of a certain depth is necessary for the snowsharks' existence. For the standard size shark (approximately 10 ft.), the snow depth would be 3 feet.
- The lower the snow depth, the less the snowshark activity.
Based on the sightings, we can postulate that snow sharks are active only when the snow depth is three(3) feet or greater. This observation poses the question: Where are the snowsharks when snow of suitable depth is not available?
I see only two possible answers to this question:
- The snowsharks "follow"the snow(i.e., migrate).
- The snowsharks hibernate.
Let us address these possibilities individually.
- First: Migratory: When the winter snow begins to melt, the sightings of snowsharks begin to decrease. This substantiates the premise that lower snow depths result in fewer snow sharks. However, we have been unable to verify whether the sightings that have been made are the same animals seen during times of heavier snowfall accumulation. If we were able to tag some of the creatures, much the same as other wildlife agencies do, we would be able to verify a migratory pattern. I am in the process of writing a grant proposal to fund such an endeavor. I believe that until this research is complete we cannot state with certainty that this species is migratory.
- Second, Hibernatory: When there is no longer enough snow to support the snowshark, it hibernates. We are already familiar with these phenomena in mammals such as bears. There are scientists among us who believe that the snowsharks remain with us year round by reducing their metabolic rates. The creatures never leave the snow areas, but hibernate during the snowless summer months. They hide themselves in caves while in hibernation usually in areas of dense vegetation. These places are quite humid and require a certain amount of air flow. The snowshark, like the marine species, requires the movement of water through its gills to support life. During hibernation the creatures would still require the movement of moisture laden air. However, since the creatures would remain motionless, they would have very low metabolic rates. Therefore, little movement of this life sustaining moisture would be required during hibernation. I would suggest that we investigate the areas of high sighting incidents during the snow free months to substantiate this hibernation claim.
To definitively answer these questions we must have the full support of the Snowshark Preservation Society. During our business meeting, I will recommend that funding and our volunteer resources be put to use in answering these questions.
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