The our oceans, and how this is

The NOVA documentary, ‘Lethal Seas’, offers us a unique
window into the past, present and future of coral reefs. The documentary raises
the awareness about the rate of ocean acidification in our oceans, and how
this is already impacting marine life. The ocean covers more than two-thirds of
our planet, its power is tremendous and its importance to life is immense.  As Ph levels are dropping, ocean acidity rises
threatening our planet’s most valuable treasures and attacking the ocean’s
fundamental web of life.

The narrator tells us that
“something is changing in the sea.” That something is the water’s chemistry. The
rising carbon emissions that are caused by burning fossil fuels, covers the
earth’s atmosphere, raises the global temperature and a quarter of that gas is
absorbed into the oceans. Carbon dioxide is entering our seas at a staggering
rate raising ocean acidity by 5 percent each decade.


According to the documentary,
coral reefs are a fertile place filled with exotic creatures and are home to a
quarter of all marine species and millions of people live from this food
source. Scientists did their research at Papua New Guinea and showed us the experiments
they have done to find out what the effects are of low Ph levels. The reefs are
made up of calcium carbonate and limestone which makes it extremely vulnerable
to acid. Tiny sea creatures that live in and around
coral reefs are at the bottom of the food chain and have been greatly affected by
their dying homes. If higher acidity reduces or wipes out populations of
these creatures it may have a chain of reaction leading to extinction. The program
reveals that this has happened before. The end of the Permian Era, there was an
increase of volcanism which spiked Co2 levels and lead to the extinction of all

It goes in-depth into a
serious threat that deserves awareness and more recognition. Evidence that coral
reefs or fish can adapt to C02 is slim, resulting in a global threat. This does
not bode well for marine animals, but also, for the human race. And, I understood
that unless this problem is slowed down or stopped completely, the extinction
of dreadfully significant number of oceanic species will greatly hasten.