Diving after dark? Today Jonathan explains the excitement of
night diving! Welcome to Jonathan Bird’s Blue World! The ocean is full of interesting and beautiful
things to see, from reefs and fish, to sharks and even whales. And of course, most of the time we see them
during the day. But they’re still out there at night. You would think that night diving would be
really scary, but believe it or not, once you get down there, it’s awesome! Night diving is popular with divers because
it is so different from diving during the day. Different animals are active, and different
behaviors can be seen. During the day, a reef bustles with activity. Most of the fish are diurnal—active during
the day. After sunset they hunker down for the night,
hiding inside all the tiny holes and cracks in the reef. Some, like the parrotfish, sleep out in the
open, although the darkness helps keep them safe. A different cast of characters emerges on
the reef at night: the nocturnal animals. A sea star is prowling for a meal. An urchin comes out of the reef on a slow
march for food across the sand. An octopus—every divers’ favorite nocturnal
critter—pops its eyes up for a peek. Then it jets away holding a snack in its arms. On the one hand it wants to get back to its den to
eat. But the octopus’s natural curiosity keeps
it around for a minute. Lionfish go on the prowl at night too, hunting
sleeping silversides over the sand. Of course they are cheating a little, using
our camera lights to help them find the prey. Moray eels rest during the day, but at night
they use their slender, flexible bodies to probe into holes in the reef, searching for
sleeping fish that think they are safe and protected. But sometimes, fish sleep right out in the
open. The moray got lucky. The fish…not so much. Another reef, another sleeping fish. Surrounded by sharks. Whitetip reef sharks hunt in packs at night. And they can detect the fish in the reef with
their electrosensory systems. When one shark finally makes a move, all the
sharks jump in on the action! It’s a long, nervous night for any fish
hiding in this reef. Zooplankton rise from the depths at night
to feed on phytoplankton in shallow water. For the animals that eat plankton, the feast
begins. A brain coral extends thousands of sticky
tentacles to catch and eat plankton. A basket star has branching arms that create
a plankton-catching net. But even without eyes, it detects and shrinks
from the lights of my camera. Big swarms of plankton can attract big appetites. A Manta ray opens its mouth wide to funnel
plankton down into strainers on its gills, doing loops to stay centered around a good
spot. Nighttime is also when the corals spawn, using
darkness to protect as many of the eggs as possible. This is a rare event. It only happens a couple nights a year. But if the corals spawned during the day,
the fish on the reef would gobble up all the eggs. The whole thing happens fast and the eggs
drift away. Sometimes during a night dive, I wonder….is
there a shark out there someplace watching me? Well, there’s one way to find out. A shark night dive! Chumming for sharks after dark is not everyone’s
idea of a good time. But you never know what might show up. In this case, a Lemon shark, with a few remoras
along for the ride. A Great Hammerhead overcomes its notoriously
shy nature to approach for a snack. No matter where I dive, there is always something
to see at night. It might seem a little spooky, but once I
train my flashlight on something interesting, I’m no longer worried about being eaten
by a mysterious monster in the darkness. Because even without daylight, the Blue World
is a fascinating place.

100 thoughts on “Night Diving! | JONATHAN BIRD’S BLUE WORLD

  1. it's 12:05AM and knowing there's fish out there having a rough night knowing white tipped reef sharks out outside.

  2. You need to kill lion fish because they will sting you and its really painful and killing lion i the right thing to do, but, if you want to kill a lion fish, you need to be an adult and be a certified scuba diver and you'll need a spear gun. Just saying.

    That's why you may see people on YouTube killing lion fish because they are doing the right thing.

    Also, be careful with the sharks in land, but not on the water.

  3. Hello Jonathin Bird I was really happy :] beacuse you licked my comment and I my self was really HAPPY! So I just wantid to say you are AMAZING.Could you make more videos of Octopie because I really enjoid that video when the other Octopus wanted a beatiful rock that an other Octopus had so to get the rock he had to FIGHT. So I think you sed in order for the other Octopus to get the rock he had to BIGHT! in order to get the rock.So the 1st round of the fight he lost but he didn,t give. At the 2nd round he the octopuse went but he lost so he thought "Hmm maby I should give up." And so he did. But the battle there was another Octopus much smaller but he didn,t charge beacuse he was small he thought a sneak attack would be good but the octopus with the rock sore him! So he reatryted. And the Octopus with the rock was in pease. So that is why Iwould like you to make more videos of Of Octopie. My favourit bit of this video is when 1 shark smelled the fish and went to eat it and then all the charks jumped in. But definetly it would be a nearves night for that FISH!:] I will be looking forward to your next video and so I wish you all the luck BYEEEEEEEE. :] :] :] :] :] :] :] :] :] :] :] :] :] :]!

  4. I did my First Night Dive in Hurghadha 2,5 Months ago and now whatched your Video. Its true that Night Dives are amazing. Keep up the Great work.

  5. Also I know you don't have the amount of subscribers you deserve but please keep making videos your channel inspired me to want to be a marine biologist and I'm going to get certified for diving soon (hopefully).

  6. When I was little. I use to think that at night in the ocean the creepy looking fish from the deep deep deep waters on the bottom on the ocean would come up at night.??!!!!!

  7. Fascinating photography of the moray eel and sharks can you please do a video about a bowmouth guitar fish(shark Ray).

  8. Hey John, awesome video! Its amazing to see the octopus change its colors so appropriately to its surroundings at night. Was that possible because it used your diving lights to see what color the surroundings were or does it have a way of doing so without light?

  9. Wow, great video, amazing video.  I love night dives, but never got to see anything this good.  Have you ever thought of doing a show on the chicken of the sea fish?

  10. This is so beautiful and informative. Thank you so much for sharing. It inspires me. (Oh, and whatever camera you are using, it's amazing!)

  11. It would be useful to know location during night diving. Please check out UWIS System:

  12. San Francisco
    Halfmoon Bay
    Santa Cruz
    California and more Hawaii and more and all around the world and more. Antartica and Austrailia and more.

  13. Did you know that eels can also be found at night right behind you because they’re usually not good with their sight so they swim behind you and use your flashlight to find prey.

  14. OMG the Hammerhead comes by for a snack and you don't even give him a snack. That one Hammerhead is going to tell everyone and soon all Hammerheads will never again swim with us.

  15. Wow it's the most beautiful scene during night time the coral egg's like a pearls floating.?
    The octopus color is amazingly beautiful ???
    Iloveyou blue world TV??

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