
Rocky shore line ecosystem zonation of species
Rocky shore line ecosystem zonation of species. Some of the animals and pants featured include whelks, mussels, bladderwrack, star fish, top shells, periwinkles, crabs, branacles, and anenomes. Illustration from The Hidden Universe: Adventures in Biodiversity by Alexandre Antonelli

Wolf hunting Elk
Wolf Canis lupus hunting Elk Cervus canadensis in Yellowstone Park. Illustration from The Hidden Universe: Adventures in Biodiversity by Alexandre Antonelli

Sea turtle threats and predators.jpg
Threats to sea turtles on beaches and at sea diagram

Mink tracks Neovison vison
Pen and ink drawing of the footprints and tracks of the North American Mink Neovison vison

Mink Neovison vison
North American Mink Neovison vison lying down, in profile

Electroreception in the Hammerhead Sphyrnidae shark diagram
Electroreception in the Hammerhead Sphyrnidae shark diagram with inset of ampullae of Lorensini and hidden prey

Water rail Rallus aquaticus
Water rail Rallus aquaticus with pond and vegetation, stalking behind a tuft of grass

Water rail Rallus aquaticus 2
Water rail Rallus aquaticus behind a stone and some grass

Schematic Diagram of Duck Egg
Stylized diagram of the duck egg showing chalaza, yolk, white, germination, membranes, and air pocket

Diagram of Duck Egg development Day 1
Stylized diagram of the development of a duck egg from being laid until after hatching Day one yolk held in place with chalaza, germinal disc where fertilized chick starts to grow

Diagram of Duck Egg development Day 12
Stylized diagram of the development of a duck egg from being laid until after hatching day twelve feathers start to show eye covered with lid claws formed

Diagram of Duck Egg development Day 27
Stylized diagram of the development of a duck egg from being laid until after hatching Day 27 hatchling squashed inside egg ready to hatch, air cell still shows

Diagram of Duck Egg development Day 5
Stylized diagram of the development of a duck egg from being laid until after hatching day five embryo separates from the yolk, blood vessel network grows and branchesm eye starts to get a colour.

Diagram of Duck Egg development Day 8
Stylized diagram of the development of a duck egg from being laid until after hatching day eight blood vessels carry waste and oxygen, eyelids start to cover eye, beak and egg tooth more clear.

Diagram of Duck Egg development Duckling chick hatching out still half in its shell
Stylized diagram of the development of a duck egg from being laid until after hatching duckling hatching half in half out of shell with prominent egg tooth

Diagram of Duck Egg development Hatched duckling chick
Stylized diagram of the development of a duck egg from being laid until after hatching hatched duckling chick