They have no natural enemies except man and power boats which are responsible for most manatee deaths- (in 1990, 218 manatees or 12 % of the total population were killed by boats), though the red tide (toxins released from the bloom of dinoflagellates) of 1982 and1996 killed over 15% of the population. It is suspected that environmental pollutions create disease vulnerability in marine mammals with manatees being no exception. An example is when 10,000 seals died in 1988 in Denmark and Sweden from viruses related to canine distemper. High concentrations of PCB’s were detected in necropsies of these seals, presumably from the water and fish they ate. Other threats include accidental
Take into consideration the following: The average dairy cow can produce as much as 21 times the amount of waste per day that the average human does (Agricultural Waste Management Field Handbook 4).A large sized CAFO housing 4700 cattle can produce as much waste per day as the human population of Berkeley, CA. Though unlike Berkeley and all other major cities, CAFOs are not home to complex sewage systems. In fact, many CAFOs simply drain the manure into large lagoons that are periodically sprayed onto the land surrounding the complex. This bacteria infested sludge is rich in key nutrients, most notably nitrogen and phosphorous, and is meant to fertilize the land. While this practice may seem environmentally sound, its acumen is dubious at
The sting of a moon jellyfish is harmless and has a very mild feeling. Moon jellyfish live in large groups and are most commonly found on the coasts of the Atlantic, Pacific, and Indian oceans. The largest type of jellyfish is the lion’s mane jellyfish, which also belongs to the class Scyphozoa. The lion’s mane’s tentacles can reach to a length of over 100 feet making it the longest animal in the world. It can also range from a few inches to eight feet in diameter.
These reptiles have the ability to do incredible things. The Green Sea Turtle is one of seven species and happens to be the largest member of the Cheioniidae family. According to www.turtles.org/hawgrnd.htm , scientists assume that post-hatchlings, pelagic-stage Green Sea Turtles are omnivorous, but there are no data on diet from this age class. Young Green Sea Turtles have a diet of jellyfish and other invertebrates. Adults tend to eat sea grass and algae.
Zebras eat only plants and grasses. They do not eat meat. Grass is the main part of their diet, but when it is scarce, zebras will eat shrubs, herbs, leaves, and even tree bark. Zebra herds will graze and roam where food is most plentiful, and can spend up to 20 hours a day grazing when food is scarce. Defense: A zebra can defend itself by being capable of running nearly 40 mph.
They need to feed their chicks and the colonies are often a long way from the fishing grounds. Each chick needs about 42 kg of food from each parent.The entire breeding population of emperor penguins may consume as much as 1,500,000,000 kg (1,500,000 metric tons) of krill, 115,000,000 (115,000 metric tons) of fishes and 3,500,000 (3,500 metric tons) of squid each year. Method Of Collecting And Eating Food Penguins feed at sea. Most feeding occurs within 15.3 to 18.3 m (50-60 ft.) of the surface.
A typical full-grown adult giraffe will eat over 70 pounds of leaves, twigs, and fruit each day. Giraffes don't need to drink water very often because there is so much water in the leaves they eat. However, when they do drink water, they can drink several gallons at a time. This is good because a giraffe has to bend down and get into a vulnerable position when drinking. Not a good idea when there are lions sneaking around!
Yao Lin Research Paper The Effects of Human Activity on Marine Wildlife Earth is the only planet in the entire universe that currently has the capability to house living creatures. Considering that 70% of this planet is covered in water, one would think the creatures inhabiting the planet would treat the water with the upmost care. However, this is incorrect. Homo sapiens, the most intelligent species on the planet, tend to treat the oceans as a place to retrieve free raw materials and a personal waste disposal. During human’s 200,000 year existence on earth, this species has managed to completely undermine the ecosystem of the marine world by introducing alien species to a certain habitat, destroying marine habitats, over-harvesting fish, and polluting the waters.
• The United Nations Environment Programme estimates that there are 46,000 pieces of plastic litter floating in every square mile of ocean. • Plastic bags are often mistakenly ingested by animals, clogging their intestines which results in death by starvation. Other animals or birds become entangled in plastic bags and drown or can’t fly as a result. • Even when they photo-degrade in landfill, the plastic from single-use bags never goes away, and toxic particles can enter the food chain when they are ingested by unsuspecting animals. • Greenpeace says that at least 267 marine species are known to have suffered from getting entangled in or ingesting marine debris.
Many different kinds of fish live in the reefs as their haven for feeding, reproduction, and safety from predators. Without an ecosystem to live in, these fish species will become extinct. Ten percent of the world's reefs have been completely destroyed. Coral reef destruction is the worst, over 70% have been destroyed and only 5% can be said to be in good condition. What has happened to destroy so many reefs?