We like to say we know less about the ocean here on Earth than we do about the surface of Mars, because while we have a vague idea of its overall structure, we've only properly seen less than 0.05 percent of it.Imagine we discover an alien planet that's teeming with life, and we've only explored an area the size of Tasmania - that's what we're dealing with when it comes to the ocean. And now, thanks to this awesome deep-sea diver, we're getting a glimpse at what's really down there.Roman Fedortsov is a deep-sea fisherman based in the port city of Murmansk in Russia, which looks out over the Barents Sea - a relatively shallow sea that opens into the Arctic Ocean.Fishing throughout the coastal Arctic ocean region, all the way to the coast of Morocco, Fedortsov has been sharing images of the deep-sea creatures that wander into his nets.And let's just say, you might think you know what an anglerfish looks like, but it's a whole other story to see one close-up, sitting in the palm of someone's hand:@sofika77 @esumain @AlyonaFonya @savsveta ''' ''''' ''''''''' ''':) pic.twitter.com/76NbF4qCRf' ''''' '''''''' (@rfedortsov) December 14, 2016Imagine being hunted by this:''''' '' ''' ''' ''''''... ''' '''' #''''''' #'''''''' #''''''''' #'''' #fish #fishing #''_'''' pic.twitter.com/76VLcK20rB' ''''' '''''''' (@rfedortsov) November 21, 2016Or this:''' ''''' "'''''''''" '' ''''-''''''''' ''''''''' '''''' #'''''''' #'''' #''''_'_'''''_''''' pic.twitter.com/o8j1EzTTRZ' ''''' '''''''' (@rfedortsov) December 16, 2016If you'rewonderingwhy they're all black, aside from red, it's the best colour to be in the deep sea if you don't want to get spotted.These creatures live in the 'twilight zone' of the ocean - otherwise known as theMesopelagic - which extends from a depth of 200 to 1,000 metres (roughly 660 to 3,300 feet) below the surface.Below the Mesopelagic is the bathyal zone, which spans from 1,000 to 4,000 metres deep (3,300 to 13,000 feet), at which point there is zero sunlight.That means these guys are dealing with only the tiniest hints of light penetration, andbecause black absorbs every wavelength of light without reflecting any back, they're effectively invisible in their natural habitat.This also applies to red-hued deep-sea creatures too, as the US National Ocean and Atmospheric Administraation (NOAA) explains:"The black animals absorb all colours of light available, and the red animals appear black as well; there is no red light to reflect and their bodies absorb all other available wavelengths of light. Thus red and black animals predominate."Case in point:''''''''' #'''' ' ''''') pic.twitter.com/CUwmzBJkDO' ''''' '''''''' (@rfedortsov) July 5, 2016Before we have a look at some more of these incredible creatures, let's just put it out there that it sucks that these animals died because they were caught up in a fisherman's net, and the best place for them is obviously back safe in their habitat.But these images give us the opportunity to appreciate and learn more about life on Earth, and the more excited we are about the breadth of life that's lurking in the depths of the ocean, the more likely researchers will be to get the funding they need to actually go down there and study them.So here are some more of our favourite pics fromFedortsov, and you can see them all in his Twitter feed:''' ''' ''''' '''''''''' '' #'''''', ''''''' ''''''' '''''''' ' #''''. #''''_'_'''''_''''' #'''''''' #'''''''''_'''' #'''' #'''' #'''' pic.twitter.com/gl4WWlCboc' ''''' '''''''' (@rfedortsov) December 11, 2016Aww.'' '' '''' ', '' '' '''''''''''''' ''''''... ''''''''' '''''' ''''''' '''''' ''''. #'''' #fish pic.twitter.com/TFTax13w6k' ''''' '''''''' (@rfedortsov) October 22, 2016'''''' ''''''' ''''''''''... ''' ''' #'''' #'''' #''_''''''' #'''''''' #fish pic.twitter.com/Y4FtfNcNuP' ''''' '''''''' (@rfedortsov) October 27, 2016''''' '''' ' #'''' '''''''' ' ''''' ''''''''. ''''''' '' '''''''':) #''''_'_'''''_''''' #'''''''' #'''''''''_'''' #''''''' #'''''' pic.twitter.com/IZZ8Q88CCi' ''''' '''''''' (@rfedortsov) December 18, 2016Join the conversation about this storyNOW WATCH: Here's how the White House master bedroom has changed from president to president
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