-
The review of the blue planet by BBC
Our earth actually is a blue planet,
which is covered with 71 percent of the world by
brine.
How vast such superficial
content! Therefore, the mysterious field is
composed of
numerous parts, such as
various marine animals and many different plants.
This means a
truth that we can’t
neglect the effects alerted on the ocean by the
creature and some
terrestrial beings
along the coast.
Food links, complex
food net, describe relationship running through
the animal-kinds, from
plankton to the
hugest sort, blue whale, approximately. To my
surprise, blue whales, such
a
formidable giant, rely on millions of krill. Such
gargantuan harvests depend on the
continuing fertility of the ocean.
There exists much amazing association between two
species like this. Generally, grey
whales are much bigger than killer whales. But 15
killer
whales can trace an adult female
grey whale several kilometers just for her baby.
They
chase the young until he can’t
swim any longer because of toil. Whales
b
reathe with lung,
as is
known. These killer whales try their best to press
the baby grey whale to make his
head in
the sea. At last, the young whale dies of oxygen-
poor. His mother can not do
anything
about it and continue her journey north for food,
leavi
ng the child’s body behind.
She has no choice to give up the one
who she had conceived for thirteen months.
Moreover, the living in the water is
usually classified according to their ambient
living
environment. In the abyssal
area, large ranks of transparent lives lead a rich
and varied life.
Among the group,
imitation is a necessary skill to confuse the
enemy and attain what they
want. These
guys may imitate the surroundings or just copy the
color around them. Some
fish have
special luminous organs, which function as
viewfinders, hiding in the dark. They
reflect the weak blue light from water
surface and slightly disappear along with it. Some
striped mullets and jellyfish have the
ability to flash like neon light. Their motion is
excellent in disguise. Most of them
move slowly relatively. As the depth rises, the
quantity
of living grow gradually with
the sunlight brightening and energy strengthened.
In the shallow sea, battles happen
every day almost. Various animals join in the
cruel
conflict. As is commonly seen,
bands of sardines used to take action together for
safety.
It’s not, nevertheless, an
ideal method. Bottlenose dolphin and whales
unintentionally
work in conjunction
with each other. Dolphins are in charge of getting
the sardines apart,
making use of waves
foam. Whales can enjoy the dish much more easily.
Smart seabirds
fly low, pressing close
to the water, to find the best location to seize
the prey. After that,
they rush into
the water like spurting arrow. The hunters grab
their relish to the habitat.
Meantime,
besides food link, there coexists symbiosis. Sea-
gull and half-moon can help
other fish
by cleaning the mould on the cover.
What is vividly introduced above occurs
in the diverse layers, while the layers are not
alone,
in touch with each other
instead. Ocean current becomes the key factor to
mix the brine
from distinct areas.
Nutrition blends to a new balance. Of course, this
results in energetic
fishing ground.
Fish shuttle up and down, making water world
filled with vitality and more
oxygen
dissolved.
-
-
-
-
-
-
-
-
-
上一篇:中小物流企业共同配送问题研究
下一篇:武汉理工大学艺术设计学院平面设计试题