* Polluted oceans- cat litter dumping toxoplasmosis into oceans. * Diseases-oceans polluted with fatal diseases and fungus causing decline in sea otter population. Paragraph 1: * Describe the sea otters: * Scientific name (Burdin, A. et al, 2011) * Scientific name * Family and Class * Smallest mammal in their family * Size * Color * Shape * Characteristics (camouflage, physical features) * Densest fur coat of any mammal their reddish-brown coat consist of about 100,000 hairs per cm² Paragraph 2: * Habitat requirements * Food-otters diet * Water-temperature of water for survival * Shelter- living locations (Wendell FE et al, 1986) * The importance of kelp beds ( J. A. Estes et al, 1998) * How climate change harms or helps sea otters habitat. Paragraph 3: * Oil spills * Oil Spill causing hypothermia.
Freshwater Crayfish Introduction Over 100 species of freshwater crayfish are known from Australia. More than 20 are native to Queensland, including the worlds smallest species, the Swamp Crayfish Growth Yabbies grow only when temperatures exceed 15° C. Yabbies grow fastest at 22-28° C. Water Temperature Yabbies and redclaw both show maximum growth at about 28° C and have an upper lethal temperature (ULT) of 36° C. Redclaw start to perish at 34° C. Whereas yabbies are very tolerant of cold, redclaw juveniles repeatedly experience heavy mortality below 8° C. Water Quality Both species tolerate salinity to a level half that of seawater; however salinity levels in ponds should not regularly exceed 2ppt or growth and behaviour may be affected.Yabbies and redclaw will tolerate very low oxygen levels. Good growth rates will only be achieved if conditions are ideal (dissolved oxygen levels above 6ppm), and warm water temperatures (25°C). The critical pH range is 7-8.5. Levels much below 7 cause moulting and shell hardening problems in yabbies.
SO what the killer whale does it dives in the water and become submerged in the water for more than 15 minutes so they can use echolocation and listen where their prey is 3. Another selective pressure is the pressure that increases as they dive. Unlike human scuba divers, a whale doesn’t breathe air under pressure. It inhales only at the surface. Furthermore, in diving mammals, the alveoli collapse at about 3 atmospheres of pressure (about 90 feet), forcing air into the bronchioles (rigid air passages), a region where gases are not exchanged.
The first reported sighting of a lionfish in the Florida Keys was January of 2009, but it is believed that they could have been here for much longer. According to Ann Dornfeld, a writer for National Public Radio, during Hurricane Andrew, in 1992, a personal fish tank containing about a half-dozen lionfish was smashed. The lionfish from the tank were accidentally released into the ocean. They then spawned and the lionfish took over. According to a news report by Dan Rather, “The estimated millions of lionfish now in these waters can be traced back to less than ten original female fish.” This is believed to be the first introduction to the south Florida waters, but now civilians continue to release these fish from their home aquariums when they become too large for the tank, or often
It is the only known surviving species of its genus Carcharodon, and is ranked first in having the most attacks on humans. [11][12] The IUCN list the great white shark as a vulnerable species,[2] while it is included in Appendix II of CITES. [13] The bestselling novel Jaws by Peter Benchley and the subsequent blockbuster film by Steven Spielberg depicted the great white shark as a "ferocious man eater". In reality, humans are not the preferred prey of the great white shark,[14] however of all shark species, the great white shark is responsible for by far the largest number of fatal unprovoked attacks on
Savannah and Black Throated- monitors Steven Raynor Junior English Comp.1 Sharon Carmack June, 18 2012 1 Savannah and Black throated - monitors are the two reptiles I’m going to compare and contrast for you. They both are part of the monitor family which is one of the oldest and largest species on the planet. Even though they are part of the same family they both have some differences and they share some likenesses as well. First off the Savannah monitor mainly lives in the grass lands of central Africa, generally found in Senegal, Northern Zaire, Ghana, Eritrea and Togo, while the Black throated-monitor is mainly found in the woodlands area of East-Africa near Tanzania. Black throat monitors are semi arboreal but spend half
They are eaten by Sperm Whales, Southern Elephant Seals and Colossal Squid. Globally, almost 80% of the toothfish species sold on the world market is illegal. Australian fisheries are some of the largest legal fisheries around the world. Macquarie Island Toothfish Fishery: located off of Tasmania, began in 1994 when the fishery was granted with its permit. It is an aquaculture fishery harvesting for commercial fishing.
In accordance with the fundamental scheme format of science fiction novels, Steve Alten, the author of "Meg", has provided a classic, typical conclusion to his novel. In brief, condensing 348 pages into a mere two sentences, "Meg" is about a gigantic species of shark believed to have died out millions of years ago. The whole novel revolves around a hunt for this shark, and it would be almost infantile to mention that in the end the shark is killed by a brave, heroic scientist who has been tracking it down and believed in its existence even when many remained dubious until the terrible Meg (an endearment of Carcharodon Megalodon) actually surfaced from the deep darkness of the Mariana Trench where it had hidden undetected all these years. Yes, the good guy kills the shark and ultimately saves the whole world from being eaten alive. Apart from a small twist in this book (a hungry fifty foot shark) it is safe to declare that Steve Alten's "Meg" is just the same as any other science fiction paperback.
The Brown Trout is a non-native species that has been occupying the lakes and bays of Maryland for hundreds of years. This type on non-native spices can be commonly found in most areas of Maryland (i.e. Chesapeake Bay). The brown trout fish of Maryland is a very interesting non-native /exotic species that has appealing and remarkable characteristics. This non-native species was first introduced to Maryland in the late 1800’s from European settlers.
(Chesapeake Bay.net) With that being said, it isn’t a surprise that the Chesapeake Bay literally translates to “great shellfish bay”, but it would not hold this title for long. By the early 20th century nearly three-quarters of the bay’s oyster reef population have been over-harvested using dredging techniques. (Oysters in the Chesapeake) Today, overharvesting has led the remaining oyster population in the bay to be only one percent of its historical amount and now the remaining population faces problems with pollution, diseases, reproduction problems, and continued harvesting. The Chesapeake Bay is a vast system of waterways with an even vaster watershed that is 64,000 square miles with an estimated 17 million people living in this area. ( Chesapeake Bay Program)