The Water Planet at Risk
turbidity, deforestation, bioaccumulate, nutrients, debris, silt, toxic
chemicals, pathogens and terrestrial
The Water Planet is at Risk
Despite its vast size, we now
realize that ocean resources are finite
and marine life is susceptible to
human influences. The oceans cover
70% of Earth and have a volume of
300 million cubic miles, weighing
approximately 1.3 million million
But, with the human
population of the earth increasing
every day, one small plastic cup from
each person adds up to a lot of
How can this effect
something as large as our ocean?
Everything that happens in our ocean
makes a difference.
There are many
processes that affect our ocean, and
they all act together.
carry pollutants, overfishing in one
area can decrease the fish in another
as larval fish may be carried
somewhat by the currents.
Since the 1970’s, commercial
fisheries have pushed fish stock to
collapse, pollution has claimed the
lives of millions of seabirds, and
untold numbers of mammals, birds,
and turtles become entangled or
snared in plastic debris that finds it
way into the sea.
Coastal habitats are
being buried, damaged, altered, or
destroyed by construction and
According to an EPA report,
the major threat to coastal waters is
from urban runoff, the water that runs
over the streets of our cities, picking
up pollutants and carrying them to the
ocean. More than three-quarters of
marine pollution begins as a
(land-derived) or man-
The types of pollutants
can be classified as
silt, toxic chemicals, and pathogens.
There are also direct threats to the
marine environment due to misuse
from overfishing, development of
coastal areas, and careless boaters.