What is the word pinniped?
Definition of pinniped : any of an order or suborder (Pinnipedia) of aquatic carnivorous mammals (such as a seal or walrus) with all four limbs modified into flippers.
Which of the following are pinnipeds?
The pinnipeds families include Otaridae (eared seals), Phocidae (true seals), and Odobenidae (walruses).
What are Marine Fissipeds?
Marine fissipeds are a unique group as this sector is home to polar bears and sea otters. They are classified as marine mammals because they depend on the sea for survival. Though they spend most of their time on land, marine fissipeds rely on the sea as a hunting ground.
Where are most pinnipeds found?
As a whole, pinnipeds can be found in a variety of aquatic habitats, including coastal water, open ocean, brackish water and even freshwater lakes and rivers. The Baikal seal is the only exclusively freshwater species.
What are the five characteristics that make pinnipeds mammals?
Pinnipeds have four webbed flippers used to propel their spindle-shaped bodies. Their sensory organs are adapted to function in both air and water: large eyes and well-developed whiskers allow feeding in dimly lit water; tail and external ears are small, limiting drag.
What are 2 characteristics that all three pinnipeds have in common?
PHOCIDAE. The Phocidae account for 90% of all pinnipeds worldwide. They are often referred to as “true seals” and are characterized by having no external ear flaps, having fur on all flipper surfaces, and small, sharp nails on the front and rear digits.
What are the 5 groups of marine animals?
There are five groups of marine mammals: pinnipeds (or “flipper-footed” animals like seals, sea lions, fur seals and walruses), cetaceans (species that cannot survive on land, such as whales, dolphins and porpoises), sea otters (the smallest marine mammal), sirenians (warm water species such as dugongs and manatees) …
Which order are pinnipeds thought to have evolved from?
While seals were historically thought to have descended from two ancestral lines, molecular evidence supports them as a monophyletic lineage (descended from one ancestral line)….Pinniped.
| Pinnipeds Temporal range: Latest Oligocene–Holocene, | |
|---|---|
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Carnivora |
| Clade: | Pinnipedimorpha |
Why do seals tilt their head back?
While sleeping out of the water, both brain hemispheres are shut down. When resting in water, harbor seals can be seen in what we call the “bottling” position, with heads tilted straight back and perpendicular to the surface; thus assuming the appearance of a floating bottle.
What is the meaning of pinniped?
Definition of pinniped. : any of an order or suborder (Pinnipedia) of aquatic carnivorous mammals (such as a seal or walrus) with all four limbs modified into flippers. —.
What is the meaning of respect?
English Language Learners Definition of respect (Entry 1 of 2) : a feeling of admiring someone or something that is good, valuable, important, etc. : a feeling or understanding that someone or something is important, serious, etc., and should be treated in an appropriate way
Do pinnipeds compete with humans?
Pinnipeds and humans may compete for space and resources. Some species have become so numerous that they conflict with local people. In the United States, pinnipeds are protected under the Marine Mammal Protection Act of 1972 (MMPA). Since that year, California sea lion populations have risen to 250,000.
What is a good sentence for pinniped?
Examples of pinniped in a Sentence. Among marine mammals, pinnipeds, such as seals, do—but cetaceans, such as whales and dolphins, do not.