Though very little to no sunlight can penetrate the deep depths of the oceans, it can indirectly aid deep ocean life by providing energy for organisms that reside above in areas where sunlight is present. When those organisms die, they sink to the bottom and provide food and nutrients for the organisms that dwell beneath.
The clearest waters are in the South Pacific Gyre. At this place, the sunlight can still be measured at 200-250m depth at maximum. Abyssal plains are at 3000-4000 m depth... so no the sunlight doesn't reach the abyssal plains, it is very far from that!
Down at those depths, there is very little light. Large eyes are able to channel and focus what little light there might be. Evolution have granted those deep sea living creatures with larger eyes over the time. At very deep depths, there is no sunlight at all. It is all filtered away by the water/ocean above. Still some organisms and even fish are able to make light. They often do this to attract prey, but can them selves become prey to those able to see.
No one knows. There are still miles of depth undetected and unexplored. Right now it is impossible to explore the great depths. Until those dark trenches are explored, the question will remain unsolved.
no
i think that its test and crush depths are still classified, but it is a safe bet that they can dive ~1000 ft. they normally operate way above that though.
The Neritic zone is located in the space of ocean between shore and the continental shelf, which is still within the Photic zone (penetrated by sunlight).
Submarines can go straight to the bottom of the ocean if they're not careful. Diving isn't a problem; it's making the number of surfaces equal the number of dives that's the trick. The actual diving depths of most military submarines is classified; e.g., the official Navy statement on U.S. submarine depths has always been greater than 400'. The true depth depends on the construction design and material. Even the depths reported on public sites and books are estimates and not confirmed military values. While the actual military depths can't be revealed, the generally reported estimated depths on most sites is between 1000 and 2000 feet for most submarines, and that's not inaccurate. Humans have gone to the deepest known part of the ocean, the Challenger Deep area of the Marianas Trench in the Pacific Ocean. Though it was in a bathyscaphe (Trieste) and not a submarine, the recorded depth was 35,797 feet, a record which still stands today.
Yes, plants can still receive sunlight on a cloudy day, although the intensity of the sunlight may be reduced.
The Neritic zone is located in the space of ocean between shore and the continental shelf, which is still within the Photic zone (penetrated by sunlight).
Most of the ocean depths are still to be explored, but here are most of the animals that are known to live there:Sharks:Megamouth sharkCookiecutter sharkGoblin sharkSixgill sharkFrilled sharkSquid:Giant SquidVampire SquidGlass SquidFirefly SquidHumboldt SquidJumbo SquidJewelled SquidOctopi:Dumbo octopusTelescope octopusBlanket octopusWhales and Dolphins:Sperm WhaleRisso's dolphinJellyfish:'Pink Meanie' Jellyfish'Crossota Millsae' jellyfishMedusa JellyfishCrystal Jellyfish'Frank Zappa' jellyfishMiscellaneous:Pelican eelViper fishPopeye grenadierSea pigFangtoothHyperiaEnyipniastes sea cucumberPolkadot RibbonfishPraya Dubia
True. Ultimately, all energy on Earth can be traced back to the sun, which is the primary source of energy for our planet. This energy is harnessed through processes like photosynthesis, sunlight, wind, and even fossil fuels that were originally formed from sunlight.
They are found in the ocean, like in the Atlantic near Canada. There are still a few in the North Sea, above the European continental shelf.