Even though a whale is big and heavy, it is not as heavy as the water it pushes away, so it floats. Saltwater is denser than fresh water, and everything floats more easily in denser water. We challenge you to research further. We also think in a couple of months the number of calves would go up because the numbers keep on going up, down, up, down. We think it will go up.
Experts offer several possible reasons for the downward trend of the past two years.
Some think the low number of calves over the last two years is due to poor feeding seasons for the gray whales during summer in the Bering Sea. Longer periods of ice covering the whales' feeding areas have prevented females from feeding throughout the season and building up enough reserves to carry out successful breeding. An overall decline in the productivity of the Bering Sea could may also be a factor. The amphipods that are a major food source for gray whales are normally extremely abundant, but the ecology of the Bering sea may be changing. Lower food production could be a result.