Yangtze Finless Porpoise

Luckily, humans have put in efforts to understand and sometimes reverse the damage done. Wilcove describes ecosystem restoration, where usually humans put concentrated effort into recreating original habitats to restore indigenous populations. This is, unless “a very different assemblage of species has taken hold of the land and cannot be dislodged,” also known as a new “steady state” (Wilcove, 2000, p. 12). Wilcove himself joined the effort by studying the impacts humans have caused on woodland critters. He surveyed an area in Maryland to detect predators by setting cardboard coated in masonry powder to record footprints. He concluded that there were “six predators: opossum, raccoon, striped skunk, dog, cat, and blue jay. All are animals that benefit mightily from their association with people”(Wilcove, 2000, p. 42). He also mentions how extensive data can only be collected when looking at the observations of many people over the generations. He talks about “generational blindness,” which means how observers of a current generation cannot make conclusions on populations without the help of data collected from the past (Wilcove, 2000, p. 13).

The number of wild animals on Earth has halved in the past 40 years . Creatures across the land, rivers, and the seas are destroyed as humans killed them for food in unsuitable numbers, while polluting or destroying their habitats.

The Yangtze River is the largest river in China running for 3,964 miles. The river deposits into the East China Sea. It is the third biggest river, behind the Nile and Amazon, in the world. The area surrounding the river is the most densely populated place in China. The Yangtze River Basin supplies an abundance amount of grain including rice which makes up 70% of it.

What: The Maui dolphin is the world’s rarest and smallest known subspecies of dolphin. It is a subspecies of the Hector’s dolphin and has genetic and skeletal differences which make it distinct from the rest of the Hector’s species. The Maui dolphin has distinctive grey, white and black markings. The sides and back are light grey, with white “flames” reaching up along the sides of its body. The underside is whitish, while the face, flippers, dorsal fin and tail are all black. There is a crescent-shaped black mark between its blowhole and eyes. It has a short snout and is easily recognized by the round shape of the dorsal fin. Females grow to 1.7 metres long and weigh up to 50 kg. Males are slightly smaller and lighter. They are known to live up to twenty years. The calves live on their mothers’ milk for up to a year although they can learn to eat at about six months. They use

Orca whales are the largest members of the dolphin family. Orcas are very curious creatures, they like to sky hop, which is when they poke their heads out of the water and look around, and they can also dive to as much as a hundred feet. These social animals live in pods and stay with them for their whole lives. They are so family oriented that they can may sleep together in a tight circle and have synchronized breathing. Orcas can grow up to thirty-two feet and can weigh nine tons. They typically eat five percent of their body weight and are amazing hunters. The lifespan of an orca in their

Orcinus orca is the scientific name for the massive marine mammal. Orcas are not rare, but have declining numbers in some areas (Martin.) Orcas are found from the Artic Ocean to the Antartic Ocean. (Britannica) They belong to the Delphinidae, or dolphin family, which is the largest

Dolphins live in packs also known as pods. All dolphins don't live in the same pod forever they might move from pod to pod. That's why there are smart because they ned brain capacity to move from pod to pod and not break chemistry. Most pods don't care for the leader beside the bottlenose dolphins. regardless most species pods do not have any membership. a lot of pods are separated from male to female. Male pods can live with the same members ranging from 10 to 25 years. Male pods cooperate during mating season so each dolphin gets a specific female. Most male pods compete and team up to defend themselves. There are three different types of pods, nursery, juveniles, and males. Nursey pods are full of females and their calfs. Juvenile pods

In my country, two prominent rivers were described as Mother Rivers, Yangtze river (Chang jiang) and Huang river, they not only cut through the nation from the east to the west, but also play an important role in serving as a renewable energy option that continue to be put to good use. For example, Peter Gleick (2013) indicates, "On the Yangtze river alone, there are an estimated 50,000 dams including the largest in

In recent years, animals in captive environments such as zoos and theme parks have grown more controversial. The literature I have reviewed focuses on a particular group of animals in captivity, cetaceans. Cetaceans include whales, dolphins, and porpoises. The literature includes a range of themes, from their unique level of intelligence to why they may mentally and physically suffer in captive environments. However, it all connects to how and why these animals live and behave differently in captive environments than their wild counterparts.

Penguins lives in north pole. penguin eats fish, ray fish, squid, cod, krill and shrimp. They live for 10 years to 25 years. Penguins huddle up to keep warm because to protect them. A penguin is a bird but it cant fly. Baby penguins are born with out feathers. Penguins dive 50 to 60 feet to catch their food. when baby penguins are about 4 weeks old they huddle up to keep warm.

Also known as the Gulf of California Harbor Porpoise, or by it’s Latin name, Phocoena sinus, as well as cochito or desert porpoise, this cetaceans resembles a dolphin, having the same sleek, grey dorsal surface, it’s only distinguishable feature being it’s flat or rounded face and dark areas around the eyes and mouth, making it look like it has a short beak. Newborn offspring have a much darker coloration. Vaquitas are relatively small in size, adults being 5 feet long, which is about the high of the average teenager in the United States, while offspring are about the size of a large human baby or a small toddler. An adult vaquita weights up to 120 pounds.

In a summary, Kolbert explains the extinctions of a variety of different major animal species that became extinct. She also explains that if trends in the environment continue that the biggest extinction in history will occur soon. If global warming, deforestation, and glaciers continue to melt she says that more and more species will continue to become extinct. She explains how humans need to be more conservative and careful with what they’re doing to prevent extinction.

The smalltooth sawfish Pristis pectinata (Latham 1794) species are a large batoid elasmobranch that prefers very specific habitats (Simpfendorfer et al., 2010). They are also a K-selected species, which means that the smalltooth have a late maturity, a small pup size and a slow growth rate (Seitz & Poulakis, 2006). The smalltooth sawfish species can be identified from the undefined or undeveloped lower caudal fin (Gómez-Rodríguez et al., 2014). Another identifier is the first dorsal fin is in line with the beginning of the pelvic fin (Gómez-Rodríguez et al., 2014). Unlike the other sawfish, the P. pectinata have about 20 to 34 rostral teeth on the saw, which is more than most species (Gómez-Rodríguez et al., 2014).

ocean is a great way to learn about the mammal. In the wild the average female orca

Since the beginning of life itself, some species have lived and prospered while other species have gone extinct never to be seen again by mankind. Because of this, some would claim that extinction is natural and not significantly problematic to the world that we live in. Others, however, understand that due to climate change, habitat loss, and poaching, more and more species are becoming endangered which leads to a chain reaction that can be devastating to ecosystems. Species such as the Chinook salmon, gorillas, tropical sharks, and polar bears are all directly affected by climate change, species such as northern spotted owls, Sumatran tigers, and lemurs are greatly harmed due to habitat loss, and species such as the sea turtle, Javan rhinoceros, African elephant, and the Red-Fronted Macaw are all affected by poaching driving them all closer and closer to becoming extinct.