claim: The Dodo has been depicted with feet.
evidence: A lead -LRB- -LSB- ˈliːd -RSB- -RRB- is a large fracture within an expanse of sea ice , defining a linear area of open water that can be used for navigation purposes .. sea ice. sea ice. Leads vary in width from meters to hundreds of meters .. As is the case for polynyas -LRB- another sea ice feature involving open water -RRB- , leads allow the direct interaction between the atmosphere and the ocean , and are important for Arctic sea ice ecology .. sea ice. sea ice. Arctic sea ice ecology. Arctic sea ice ecology and history. Additionally it has been lately found that ice leads contribute significantly to the amount of mercury deposited onto surface and leaked into the ocean .. If the air is cold enough -LRB- typically in the winter -RRB- , the water within a lead quickly refreezes , such that in many cases , leads are partly or entirely covered by a thin layer of new ice .. new ice. Sea ice