Marine predator

Marine predator is a general term for a predator that lives and hunts in the sea. 

They are carnivores (meat-eaters) that catch other marine animals, such as fish, squid, marine mammals, or smaller predators. 

Examples include sharks, orcas (killer whales), seals, sea lions, and some dolphins. 

In short: a marine predator is a hunter of the sea that catches its prey in the water or on the coast.

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Marine Mammals

Marine mammals are mammals that live entirely or mostly in the sea, but breathe air, are warm-blooded, give birth to live young, and nurse them. 

Brief summary of the main groups: 

Cetaceans (Cetacea) Whales, dolphins, and porpoises. 

Completely aquatic, lacking hind legs. 

Examples: blue whale (largest animal ever), orca, common dolphin, harbor porpoise. 

Manatees and Dugongs (Sirenia) Herbivorous, slow-moving marine mammals. 

Live in shallow coastal waters and rivers. 

Examples: Caribbean manatee, dugong (the "mermaid" of stories). 

Seals and Sea Lions (Pinnipedia) Half-aquatic, half-land (for resting and giving birth). 

Examples: harbor seal, gray seal, California sea lion, walrus. 

Sea Otters (Enhydra lutris) Smallest marine mammal. 

Lives in cold coastal waters (especially the North Pacific). 

Uses stones to open shells. 

Polar bears (Ursus maritimus) are sometimes also considered marine mammals. 

Live on sea ice and pack ice in the Arctic, hunt seals.

 

Characteristics of marine mammals: Breathe with lungs → must surface to breathe. 

Thick layer of blubber for insulation and energy. 

Streamlined body for swimming. 

Most species migrate over long distances. 

In the Netherlands, you mainly see: common seal, gray seal, and harbor porpoise (our only native cetacean).

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Black-tailed Prairie Dog

The black-tailed prairie dog (Cynomys ludovicianus) is a rodent native to North America, found primarily in the grasslands of the United States, Canada, and Mexico. 

They live in large colonies, dig extensive underground tunnels, and communicate with complex vocalizations. 

Their diet consists primarily of grasses and seeds. 

They are social, play an important ecological role, and are known for their warning "bark."

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Black-haired hedgehog

The black-haired hedgehog (Zaglossus bartoni) is an oviparous mammal of the genus Zaglossus, belonging to the echidnas and lives in the forests and mountainous areas of New Guinea, mainly at an altitude of 2000-3000 meters. 

The animal is 60-100 cm long, weighs 5-10 kg, has a thick black coat, five claws on the front legs and four on the hind legs. 

It feeds mainly on worms and insects, is nocturnal and rolls up into a spiny ball when in danger. 

The species is seriously threatened by hunting and deforestation.

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Bushy-tailed opossum - Glironia venusta

The bushy-tailed opossum is a mammal in the Didelphidae family. 

The scientific name of the species was first validly published by Thomas in 1912. 

It is the only species in the genus Glironia. 

The species is found in the Amazon region of Brazil, Ecuador, Peru and Bolivia.

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Collared woolly possum (Caluromysiops irrupta)

The collared woolly opossum is a species of opossum from South America. 

It is the only species in the genus Caluromysiops.

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Yellow woolly possum

The yellow woolly possum is a marsupial from the opossum family. 

The scientific name of the species was published as Didelphis philander in 1758 by Carl Linnaeus. 

This animal is quite small, up to 25 cm long, and lives solitary in the trees of the rainforest. 

It mainly eats fruits.

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Red woolly possum

The red woolly possum is an opossum species from South America. 

Its habitat is limited to moist forests. 

Like any other species of the genus Caluromys, the red woolly possum lives mainly in the treetops.

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Derby woolly possum (Caluromys derbianus)

The Derby woolhair possum has a slender build with a head-trunk length of 18 to 30 cm and a tail of 27 to 49 cm long. 

The weight is 200 to 400 grams. 

The dense, soft, woolly coat is reddish to orange-brown in color, although there are regional color variants with gray fur. 

A dark brown stripe runs from the forehead to the muzzle. 

There is a gray spot in the center of the back. 

The underside of the body is white to golden brown in color. 

The tail is partly white and bare with brown spots and partly (one third to half) hairy. 

Adult males have a distinctive blue scrotum. 

The pouch is well developed in the woolly possum. 

The ears are creamy white to pink in color. 

The front legs and feet are light colored and the fingers and toes, except for the opposable thumbs, have claws. 

The woolly possum has several ape-like specializations, such as a strong prehensile tail, dexterous hands, and larger and more forward-facing eyes than other possums.

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Common fur hedgehog

The common long-beaked hedgehog is a New Guinean short-beaked echidna, one of the three living species of the long-beaked hedgehog genus. 

Fur hedgehogs are egg-laying mammals. 

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