Animals, despite their ability to move about and find shelter, are just as much influenced by climate as plants are. Creatures such as the camel and the Penguin are so highly specialized that they have and extremely limited distribution. Others, such as bears, are flexible enough to adapt to a broad range of climates. Ocean-dwindling organisms are just as sensitive to climatic change-in this case temperature and salinity-as land animals. Reef corals can survive only in their environment that their presence can be taken as an index of sea temperature. Human being is among the least specialized of all animals and can live almost anywhere. Their clothes and their homes act as a sort "miniature climate" that can be taken with them everywhere.