Claire Corlett

Fish Food, Fish Tanks, and More


Hi, I’m Jonathan Bird and
welcome to my world! ( ♪ music ) The sea snake is an animal
surrounded in mystery—known for
its incredibly powerful venom,
but not much else. Just how dangerous
are these marine reptiles? I have traveled to Queensland,
Australia on a quest to learn
about sea snakes. Here on Australia’s Great
Barrier Reef, sea snakes are
fairly common. Lets go see if we can find one. I hit the water, grab my camera
and head towards the sea floor. Today I’m diving on a little
seamount called a coral Bommie.
It’s a mini-mountain of coral sticking up from the
bottom, but not quite reaching
the surface. Near the top of the Bommie,
thousands of small fish feed on
plankton passing by in the
current, but they stay close to the
reef, because they are being
watched by a big school of jacks who are on the prowl for food
themselves. The bommie is covered in
healthy coral that provides
lots of nooks and crannies for
the fish to hide if they need cover. On the other side of the
bommie, a large school of
snappers are also looking for
something to eat, and keeping a safe
distance from the jacks. As I swim along at the base of
the bommie, I’m keeping my eyes
open for a snake-like animal. The coral looks healthy
and a Spinecheek anemonefish
gives me a quick glance from the safety of her host anemone. But I keep scanning the bottom
and at last I have found my
quarry: an olive sea snake, the most common species around
the Great Barrier Reef. It’s
swimming along the bottom doing the same thing everything else
is doing—looking for food. The
sea snake is closely related to a land snake, except it has
adapted for life underwater. When a sea snake flicks its
tongue, it’s getting rid of
excess salt secreted by special glands in its mouth. Sea snakes
live exclusively in the ocean,
but since they’re reptiles, their kidneys can’t deal with
too much excess salt in their
blood. A sea snake gets around with a
flattened section of tail that
looks like an oar and serves as a fin. It looks just like an
eel when it swims, undulating
its body and getting propulsion from that flattened tail. Although sea snakes prefer to
eat fish, eels and shrimp,
these snappers aren’t at all afraid of the sea snake,
because they are way too big
for the sea snake to bite. This snake is heading for the
surface to grab a breath of
air. A sea snake, just like a land snake, has lungs and must
breathe air to survive. It can
hold its breath up to 3 hours during a dive. Recent
research has shown that some
sea snakes also can absorb a
little bit of oxygen directly from the
water through their skin, which
is probably why a breath can last so long. After spending a minute at the
surface breathing, the sea
snake comes back down to the
bottom. It’s poking around, looking for
holes where it might corner a
fish or shrimp. It sticks its head into the holes, hoping
to get lucky. The sea snake is most closely
related to the Cobra on land,
and its venom is quite similar to cobra venom, but
considerably more potent. If it
manages to grab a fish, the
venom will kill it in seconds. Sea snakes quite often take a
rest on the bottom, sleeping as
they hold their breath. I use the opportunity to sneak
up on one. In spite of their
fearsome venom, sea snakes are very timid and not
particularly aggressive.
Although this one is obviously
not thrilled about being picked up, it
doesn’t try to bite me. And when I let go, it just
swims away. away. I find another one and can’t
resist the opportunity to show
the flattened tail section. Swim, be free! Although the sea snake is one
of the most venomous animals in
the world, you’re not very
likely to be bitten by one. There are 62 known species of
sea snakes and they live all
around the tropical
Indo-Pacific. I found this banded sea snake
in the Philippines. They like
nice warm tropical water because they are cold-blooded, like all
reptiles. If the water gets too
cold, they get lethargic. So, no matter what you might
think of snakes, sea snakes are
timid and shy animals that represent almost no threat at
all to people, even though they
produce some of the most powerful venom in the world. ( ♪ music )

100 comments on “Sea Snakes | JONATHAN BIRD’S BLUE WORLD

  1. Anyone from India 🇨🇮🇨🇮🇨🇮🇨🇮🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳

  2. Aap logo ne sb Kuch diya ha is duniya ko, God bless you ,u r real hero , u gave everything this world ,as technology, invention discovery , sport ,etc when I read anyone or see ,and listen your name come first

  3. Thank you Jonathan I like your video especially after using Indonesian text so we can be more happy to see it

    Yg dari negara +62 like yah… 😎 Smoga Panjang Umur.. Mudah Rezki.. & Keluarga Sehat semua.. Aamiin.

  5. Wow this is amazing! Exploring under sea is so fascinating hopefully one day I will have a chance to dive though I find it scary at the same time..Please come to Oman and explore here.

  6. God imagine running into a snake. Now imagine that snake can basically fly towards you. That’s diving with sea snakes

  7. I know the odds of them biting you is low, but I’m still not gonna take the risk and rub ones belly. I’m not the luckiest guy in the world, so I can’t take dumb risks.

  8. From Nigeria. Just want to say I discovered your channel today and it's great. I used to think these sea snakes attack humans like land snakes.

  9. Man, I love this channel! Thank you for sharing these amazing experiences with us, Jonathan. I’ve learned a lot from you.

  10. hi jonathan i hope i someday get my certification thank you for teaching me all this amazing stuff i loves your videos

  11. It's pretty incredible how timid these snakes are. I can't even imagine how many fatalities there would be if they were aggressive like a mamba.

  12. The sea snake's lungs must be built from magic. I mean how could any creature hold their breath while sleeping?! Just how badass is that??

  13. can you tell me what is the name of the snake in the thumbnail? the white one, causr recentley ive seen those whing while camping near the sea

  14. Sir can i ask you?What prefession is this?Marine Biologist?correct me if im wrong.I want to become like u Im grade 11 student i discovered your video so lately but this is so Informative.And This Is Relatable Because I love Studying about marine Life too .I used to Pick some Organism in sea And Study like octupos,Jellyfish,Fish Etc.I hope you'll notice me Btw im from philippines

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