### animals:

Ice worm
* Ice Worms are the only known creatures that spend their entire lives covered in ice.
* are animals
  - tiny, roughly three quarters of an inch in length
* live on glaciers eating a diet of algae and pollen.

### animals:

Male animal
* Many male animals are brighty coloured.
* Most male animals are dangerous
  - can be dangerous
  - compete with their peers for sexual dominance and men are no exception
* Some male animals give food to possible mates
  - show interest
* are animals
  - males
* develop tumors of the seminal vesicles and adrenal glands.
* have penises.
* move on once they've had their way with the females in the herd.
* spend a lot of time and energy trying to attract females.
* tend to be more colorful than females of the same kind.
* use their sense of smell to determine the sexual receptiveness of females.

### animals:

Migratory animal
* Many migratory animals pack together in the south during the winter
  - use the magnetic poles when they travel long distances each spring and fall
* are animals.
* know their locations by the intensity of the field.
* use riparian areas as stops off points to forage, drink and rest before moving on.
+ Earth's magnetic field, Migratory Animals
  * Animals that undergo long migrations depend on the magnetic field for a guide. The magnetic field is used for many things in these migratory animals. Migratory animals know their locations by the intensity of the field. They know the time because of circadian rhythms the field produces. Migratory animals are born with a magnetic map in their head that allows them to migrate great distances safely. Their ability to sense the magnetic field is because of magnetic particles. Other animals have a chemical compass based on a radical pair mechanism
  - field: Earth :: Magnetism
  * It shields the Earth against harmful particles in space. The field is unstable and has changed often in the history of the Earth. The magnetic field creates magnetic poles that are gradually moving toward the geographical poles. Many migratory animals use the magnetic poles when they travel long distances each spring and fall. The magnetic poles will trade places during a magnetic reversal

Sea mammal
* Some sea mammals establish breed colonies
* Some sea mammals establish large breed colonies
  - marine organisms
  - placental mammals
  - well represented in Shetland
* frequent the coastal region.

### animals:

Silky shark
- considered dangerous to humans because of their aggressive nature and size
  - fish
  - important to longline and gillnet fisheries in many parts of the world
  - normally dark grey with a shade of bronze, but are sometimes a golden-brown colour
+ Silky shark, Description: Sharks
  * Silky sharks are normally dark grey with a shade of bronze, but are sometimes a golden-brown colour. Their undersides are white
  - Human interaction
  * Silky sharks are considered dangerous to humans because of their aggressive nature and size. Silky sharks have been observed with their head raised, back arched and tail lowered, a posture believed to be a form of threat display.
  * Silky sharks are important to longline and gillnet fisheries in many parts of the world. In the Gulf of Mexico they are often caught with tuna catches, but are also caught by shark fishery. In the Caribbean they are sometimes fished, usually by longline, but they are not a common catch. In Japanese waters, Silky sharks are a common target species of the shark fishery and are also caught with swordfish and tuna fisheries. In the mid-Atlantic waters of the U.S.A, the Silky shark is fished on a limited basis, but not in significant numbers. The meat, oil, and fins of the Silky shark are sold commercially