Hidden behind the dense curtain of the ocean water and singing an eerie song of their own, whales are the gentle giants of the deepest depths. Whales are built similarly to the Hippopotamus and are warm-blooded with a layer of blubber to help insulate and moderate body temperature. Large flippers allow them to navigate the ocean currents, and their blowholes on the top of their head allow a quick breath before diving again. Some whales can hold their breath for up to 90 minutes.

Earth Day, an annual celebration of the efforts made to support the environment, occurs on April 22nd throughout the world. This day is meant to help raise awareness of environmental issues through rallies, service projects, conferences, and other outdoor activities. Although Earth Day began as a small grassroots movement, its existence has propelled the creation of the Environmental Protection Agency (EPA), the passage of the Clean Air Act, the Endangered Species Act, the Water Quality Improvement Act, the Federal Occupational Health and Safety Act, and others.