Our oceans are filled to the
brim with all sorts of creatures
that can seriously mess you up.
Wanna meet the locals?
We're diving into the deep to bring you
Slinking out of the blue
at an alarming rate,
it's the most sinister of serpents,
These agile snakes
dive in a zig-zag pattern,
swimming at a faster pace
than a human diver.
And since some sea snakes contain
more venom than any land-dwelling snake,
you might want to steer clear of them.
Seriously,
their venomous bite will leave
you feeling stiff and achy.
Well, that's not so bad.
I should also mention the sweating
and vomiting.
Oh, and once your muscles paralyze,
so will your airway.
I told you to steer clear.
Though sea snakes don’t
typically target divers,
Australian researchers
may know why these snakes chase us down.
They’re blinded by love!
Yup.
Sea snakes searching for their soulmates
might mistake us for their own kind.
Once the snake realizes
you're not a potential suitor,
you're probably safe from harm.
Look, I get it.
You're just emotionally unavailable
right now.
Living up to its threatening title,
Titan triggerfish focus
on hunting, mating
and protecting their eggs.
You know, wholesome family activities.
Don't let their goofy appearance
and lack of poison fool you.
Triggerfish don't mess
around with their crushing chomp.
Take one step too close
to their precious nests
and you can expect a flesh-tearing bite.
These feisty fish have no problem
biting through hard
shells and spiny
exteriors to feast on prey
like crabs and mollusks.
Uh, yeah.
You might want to get
that bite looked at.
Bringing the decor and destruction,
This is one bouquet
you definitely don’t
want to stop and sniff.
These colorful sea urchins
are in it for the long haul,
living up to 200 years.
Now, I know what you're thinking.
Flower urchins
aren’t underwater predators,
and they mostly just hang out
eating algae and marine snow.
So what's the big deal?
Well, now would be a good time
to tell you that flower urchins
are the most venomous sea urchins.
I probably should have led with that.
Get too close,
and you're in for a world of pain.
I'm talking muscle contractions,
disorientation and respiratory issues.
They're all reactions
you don't want to happen on land,
let alone underwater.
This could lead to drowning
in the cold,
silent,
abyss.
Oh look, an octopus!
Our next creature
is terrifying,
toxic
and also very tiny.
These dainty destroyers measure in
at only 6 cm (2.5 in) in length
with their eight arms
stretching to about 10 cm (4 in).
This means our miniature mollusk
relies mostly on its vicious
venom for protection.
Its signature,
electric-blue rings only appear
when the octopus feels threatened.
If you see that,
you're in trouble.
A single blue-ringed
octopus has enough poison
to kill more than 20 people,
and its venom is 1,000 times
stronger than cyanide.
Just one bite from this
teeny terror will cause symptoms
ranging from a headache
to the total inability to breathe.
Putting pressure on the wound
and seeking emergency treatment
like extra oxygen
and IV fluids could save your life.
You’ll need to be quick,
as the octopus’s venom can
claim your life in minutes.
We’ve saved the best for last.
Or is it the worst?
Well, our headliner isn't called
the sea wasp for nothing, folks!
Box jellyfish have up to 60 tentacles
and can weigh up to 2 kg (4.4 lb).
And while most jellyfish merely float,
the sea wasp prefers to swim,
making it an excellent hunter.
Sea wasp jellies
are reported to have killed
more than 70 people since 1883,
but other estimates list
the death toll at over 100.
A box jellyfish probably wouldn't
sting you on purpose,
but that doesn’t mean
you’re off the hook.
Like other jellies,
these creatures are transparent
and slow-moving,
making them hard to see in the water.
Even if you spot one in time
and try to dodge it,
the jellyfish’s 3 m (10 ft) long tentacles
could still snag you.
Just one box jellyfish
has enough venom
to kill 60 adults,
and a sting will kill you
within five minutes.
Mild symptoms include burning,
bleeding and blistering pain.
Severe symptoms include
trouble breathing,
cardiac arrest
and well
death.
Hungry for another creature countdown?
Be sure to check out the
Top 5 Deadliest
Bugs in the World!
We'll see who wins
on another round of VS.