How do otters respond to their environment?

Sea otters exhibit numerous adaptations which help them survive in their challenging marine environment. Long whiskers help them to detect vibrations in murky waters and sensitive forepaws, with retractable claws, help them to groom, locate and capture prey underwater, and use tools.

How long can otters hold their breath?

An otter’s lung capacity is 2.5 times greater than that of similar-sized land mammals. Sea otters have been known to stay submerged for more than 5 minutes at a time. River otters, however, can hold their breath for up to 8 minutes.

How sea otters help protect underwater meadows?

In British Columbia, Canada, sea otters often eat clams, which bury themselves in meadows of eelgrass (Zostera marina), a wide-ranging aquatic plant species. … The predators use their sensitive whiskers and front paws to feel for clams in the soft seafloor.

Is an otter a producer consumer or decomposer?

The sea otter is a secondary consumer, an omnivore, and eats kelp (kelp is a kind of seaweed) and sea urchins. Large fish are omnivores, secondary consumers, and eat kelp and small fish.

What animals eat alligator?

Newly hatched alligators live in small groups, called “pods.” Some 80 percent of young alligators fall victim to predators such as birds, raccoons, bobcats, otters, snakes, large bass and larger alligators.

What ecosystem is in trouble?

Mountain ‘fynbos’ on Cape Town One of the most threatened ecosystems in the world is located in Cape Town, South Africa. With extensions that accommodate 8,500 vascular plant species -70% of them endemic-, thickets of fynbos are in grave danger of disappearing because of the fires, urban expansion and urban expansion.

What is an otters food chain?

The river otter food chain also consists of mussels, bivalves, snails, crabs, crayfish, turtles, frogs, large beetles, worms, injured waterfowl or chicks, bird eggs, fish eggs, snakes and snake eggs. Small mammals in the river otter food chain include mice, immature beavers and muskrats.

What is the relationship between water clarity and otter survival?

What is the relationship between water clarity and otter survival? __Clearer water is better for otters because since they eat urchins, the clearer water helps them find food easier.

What makes sea otters unique?

Sea otters have the thickest fur of any animal. Their fur contains between 600,000 to 1,000,000 hair follicles per square inch. Unlike most other marine mammals, otters lack a blubber layer. Instead, they depend on their dense, water-resistant fur to provide insulation.

What otters are in puget sound?

Along Washington’s ocean coast there’s the much larger Sea Otter, but the River Otter’s the one to look for around Puget Sound, where it occurs in many places. Including the long tail that propels it through the water, the River Otter grows to 4 feet and over 30 pounds.

What species do sea otters help?

Endangered Species Act IUCN Red List CITES
Threatened Endangered Appendix I

Which ecosystem is the most endangered coastal marine ecosystem?

Abstract. Coral reefs are the most diverse marine ecosystems, at least on a per-area basis if not overall, with perhaps millions of species. They are also among the most threatened ecosystems. Outbreaks of coral eaters, smothering by seaweed, coral bleaching, and coral disease have all decimated reefs globally.

Who wins lion or crocodile?

Although the lion has a lot of advantages over the crocodile in terms of a fight, the crocodile would win in a fight against a lion. The crocodile is simply too large and powerful for the lion to defeat.

Why is the otter important?

Otters are an essential keystone species. Along the Pacific coast, sea otters help control the sea urchin population. Fewer sea urchins in turn help prevent kelp forests from being overgrazed.

Why are river otters indicator species?

River otters are considered an indicator species and their presence is a hopeful sign of improving watershed conditions. These apex aquatic predators play an important role in ecosystem health, as they eat fish, crustaceans, invertebrates, birds, and amphibians.

Are river otters smart?

River Otters are very intelligent and curious animals. They have well developed hearing and sense of smell. They spend most of their day foraging and exploring their home range.

Are river otters warm-blooded or cold blooded?

As mammals, sea otters nurse their young and are warm-blooded. They hunt, mate, groom, give birth, play, rest, and sleep entirely at sea, where the animals lounge at the water’s surface and on kelp beds.

Are otters protected species?

Conservation Status: Otters are strictly protected by the Wildlife and Countryside Act (1981) and cannot be killed, kept or sold (even stuffed specimens) except under licence. … Otters require clean rivers with an abundant, varied supply of food and plenty of bank-side vegetation offering secluded sites for their holts.

Are sea otters the same as river otters?

Coastal otters are sometimes called ‘sea otters’, but they are exactly the same species as the animals that live further inland. Mainly active during the day, coastal otters generally have much smaller home ranges than their riverine counterparts, because of the abundance of fish and crustacean prey in inshore waters.

Did the loss of sea otters have a direct or indirect effect on the sea urchins?

Sea otter numbers decreased, urchin populations increased, and the amount of kelp decreased. Trophic cascades and keystone species have been identified in many other habitats.

Do otters have a mutualistic relationship?

The mutually beneficial symbiotic relationship between sea otters and kelp is essential to the health of the entire kelp forest ecosystem. Sea urchins found in kelp forests typically eat drift kelp, but when it is scarce they eat living kelp plants.

How are otters keystone species?

Sea otters are a “keystone species” which means that they can exert top-down pressure via predation on sea urchins, which are grazers upon kelp. As urchin density decreases from sea otter predation, so does the grazing pressure on kelp and as a result kelp forests flourish in the presence of sea otters.

How are otters protected?

Sea otters have been protected by the International Fur Seal Treaty since 1911. This treaty between U.S., Russia, Japan, and Great Britain was established to ban large-scale commercial hunting of sea otters and fur seals and to allow their populations to recover. Since then, sea otter numbers have increased.

How are sea otters indicator species?

Sea otters live in the intertidal zone, making them a key indicator species in determining water quality and aiding researchers discover direct sources of land pollution entering waterways.

How do southern sea otters act as a keystone species in their environment explain why we should care about protecting this species from extinction?

Explain how southern sea otters act as a key-stone species in their environment. Sea otters prey on the sea urchins, which helps the kelp forests. The sea otters keep the population of sea urchins down, which allows the kelp forests to grow, & helps keeps kelp forests from being destroyed.

How do southern sea otters act as a keystone species?

The southern sea otter act as a keystone species by controlling the population of sea urchins and prevents elimination of kelp. They must be protected from extinction as they support many aquatic plants and animals.