Most familiar forms of sea life occupy the neritic zone, including crabs, shrimp and zooplankton, and the animals that feed upon them, such as coral, sponges and baleen whales. The neritic zone is the relatively shallow area of ocean extending from the coast to the edge of the continental shelf.
The neritic zone is about 650 feet deep at maximum. Its proximity to the sun makes it a richly productive location for plankton that use sunlight to make food, just as terrestrial plants do. These plankton are fed upon by other plankton, herbivorous fish, filter-feeders and small crustaceans. These herbivores are fed upon by larger predatory fish, molluscs and crustaceans. At the top level, seabirds, seals, penguins and sea otters consume smaller marine predators. These animals thrive in the neritic zone, but they are not often found far from the coast.Learn More
In the United States, frogs normally lay eggs in the spring. In warmer climates, such as Australia, frogs lay eggs more often. In North America, during spring months, the female frog releases her eggs into the water. The male frog then releases his sperm to fertilize the eggs.Full Answer >
Mammals are distinguished from other animals by having mammary glands and complex hair follicles, and by the structure of their skulls, which feature highly modified jaw bones. Mammals are also warm-blooded and have a number of adaptations to allow for high metabolism.Full Answer >
Molds belong to the kingdom known as fungi. This kingdom is part of the five-kingdom classification system introduced by R.H. Whittaker in 1959 that gave fungi equal status with plants and animals. Molds, as well as other fungi, are eukaryotic organisms that are considered distinct from plants and animals.Full Answer >
Despite the harsh climate, the tundra is home to many animals, including herbivores, such as lemmings, voles, and caribou, and predators, such as polar bears, wolves and foxes. In addition to a few species, which inhabit the tundra all year, a number of migratory birds inhabit the area during the summer. Insects are also important residents of the tundra, as they are in most other terrestrial habitats.Full Answer >