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Scheduled Pinned Locked Moved Science Memes
sciencememes
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  • fossilesque@mander.xyzF fossilesque@mander.xyz
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    mouselemming@sh.itjust.works
    wrote last edited by
    #20

    Modern fish are often dark on top and light underneath to fool prey/predators but also often colorful. Why do they assume one evolutionary step over the other? That beautiful blimpie belly calls out for decoration!

    soleinvictus@lemmy.blahaj.zoneS 1 Reply Last reply
    6
    • fossilesque@mander.xyzF fossilesque@mander.xyz
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      cornshark@lemmy.world
      wrote last edited by
      #21

      How does it maneuver without any fins?

      R C 2 Replies Last reply
      12
      • C cornshark@lemmy.world

        How does it maneuver without any fins?

        R This user is from outside of this forum
        R This user is from outside of this forum
        reddfugee42@lemmy.world
        wrote last edited by
        #22

        I often wonder that about your mom

        1 Reply Last reply
        15
        • S This user is from outside of this forum
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          speiser0@feddit.org
          wrote last edited by
          #23

          For the uninformed: https://www.youtube.com/watch?v=aPkwGhwU_FY

          1 Reply Last reply
          8
          • M mouselemming@sh.itjust.works

            Modern fish are often dark on top and light underneath to fool prey/predators but also often colorful. Why do they assume one evolutionary step over the other? That beautiful blimpie belly calls out for decoration!

            soleinvictus@lemmy.blahaj.zoneS This user is from outside of this forum
            soleinvictus@lemmy.blahaj.zoneS This user is from outside of this forum
            soleinvictus@lemmy.blahaj.zone
            wrote last edited by soleinvictus@lemmy.blahaj.zone
            #24

            Functional changes in coloration are much "easier" (read: more likely) to develop through random mutation than functional changes to complex mechanical structures like bone structure or musculature. Given their predecessors were already under selective pressure by predation for millions of years prior, it's reasonable to assume they'd developed countershading (light bottom, dark top). Plus current agnathans are usually pretty dull.

            Edit: oh geez, I misunderstood your message. It totally could have been a rainbow party blimp. That mostly depends on what their habitat was like.

            M 1 Reply Last reply
            9
            • soleinvictus@lemmy.blahaj.zoneS soleinvictus@lemmy.blahaj.zone

              Functional changes in coloration are much "easier" (read: more likely) to develop through random mutation than functional changes to complex mechanical structures like bone structure or musculature. Given their predecessors were already under selective pressure by predation for millions of years prior, it's reasonable to assume they'd developed countershading (light bottom, dark top). Plus current agnathans are usually pretty dull.

              Edit: oh geez, I misunderstood your message. It totally could have been a rainbow party blimp. That mostly depends on what their habitat was like.

              M This user is from outside of this forum
              M This user is from outside of this forum
              mouselemming@sh.itjust.works
              wrote last edited by
              #25

              Thanks for editing not deleting because TIL!

              soleinvictus@lemmy.blahaj.zoneS 1 Reply Last reply
              7
              • fossilesque@mander.xyzF fossilesque@mander.xyz
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                y0kai@lemmy.dbzer0.comY This user is from outside of this forum
                y0kai@lemmy.dbzer0.comY This user is from outside of this forum
                y0kai@lemmy.dbzer0.com
                wrote last edited by
                #26

                The eyes would suggest it's a predator.

                F tlaloc_temporal@lemmy.caT 2 Replies Last reply
                19
                • B brokenlcd@feddit.it

                  It's funny when looked sideways, but when looked from the front it's two distortion filters away from analog horror.

                  J This user is from outside of this forum
                  J This user is from outside of this forum
                  jargonwagon@lemmy.world
                  wrote last edited by
                  #27

                  Horror already without filters. I'm going to see that thing in my nightmares, fuckin hell.

                  poinck@lemm.eeP 1 Reply Last reply
                  2
                  • M mouselemming@sh.itjust.works

                    Thanks for editing not deleting because TIL!

                    soleinvictus@lemmy.blahaj.zoneS This user is from outside of this forum
                    soleinvictus@lemmy.blahaj.zoneS This user is from outside of this forum
                    soleinvictus@lemmy.blahaj.zone
                    wrote last edited by
                    #28

                    Of course! I'm a biologist, I try to use my powers for good.

                    1 Reply Last reply
                    6
                    • C cornshark@lemmy.world

                      How does it maneuver without any fins?

                      C This user is from outside of this forum
                      C This user is from outside of this forum
                      chuckleslord@lemmy.world
                      wrote last edited by chuckleslord@lemmy.world
                      #29

                      Not well. That's why most of its ancestors have fins nowadays

                      J 1 Reply Last reply
                      13
                      • fossilesque@mander.xyzF fossilesque@mander.xyz
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                        drspawndisaster@sh.itjust.works
                        wrote last edited by
                        #30

                        Prototype fish

                        1 Reply Last reply
                        10
                        • fossilesque@mander.xyzF fossilesque@mander.xyz
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                          nigelfrobisher@aussie.zone
                          wrote last edited by
                          #31

                          This fish foresaw that evolution would lead to celebrity news, Return To Office mandates, and oversized utes, and decided it was happy precisely where it was.

                          1 Reply Last reply
                          8
                          • y0kai@lemmy.dbzer0.comY y0kai@lemmy.dbzer0.com

                            The eyes would suggest it's a predator.

                            F This user is from outside of this forum
                            F This user is from outside of this forum
                            flambonkscious@sh.itjust.works
                            wrote last edited by
                            #32

                            That's what I thought! I'm too stupid to make anything more of it here for this community though

                            1 Reply Last reply
                            1
                            • C chuckleslord@lemmy.world

                              Not well. That's why most of its ancestors have fins nowadays

                              J This user is from outside of this forum
                              J This user is from outside of this forum
                              jorge@lemmygrad.ml
                              wrote last edited by
                              #33

                              Don't you mean its descendants?

                              1 Reply Last reply
                              1
                              • fossilesque@mander.xyzF fossilesque@mander.xyz
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                                kellenved@sh.itjust.works
                                wrote last edited by
                                #34

                                She call me Mr. Boombastic

                                Sacabambaspis

                                1 Reply Last reply
                                9
                                • y0kai@lemmy.dbzer0.comY y0kai@lemmy.dbzer0.com

                                  The eyes would suggest it's a predator.

                                  tlaloc_temporal@lemmy.caT This user is from outside of this forum
                                  tlaloc_temporal@lemmy.caT This user is from outside of this forum
                                  tlaloc_temporal@lemmy.ca
                                  wrote last edited by
                                  #35

                                  Or just that it needs to focus on from of itself like filter crabs, or that it needs to see through things like kelp forests or hole enterances.

                                  Given it's size and the extreme binocular vision, it's unlikely to have any ambush predators.

                                  I looked it up, it has bony plates all over it's body and likely a lateral line, so seeing predators directly may have been less necessary. It was also a suction feeder, so likely an active predator of much smaller things. It may have needed good forward vision because it's maneuverability was poor.

                                  1 Reply Last reply
                                  0
                                  • J jargonwagon@lemmy.world

                                    Horror already without filters. I'm going to see that thing in my nightmares, fuckin hell.

                                    poinck@lemm.eeP This user is from outside of this forum
                                    poinck@lemm.eeP This user is from outside of this forum
                                    poinck@lemm.ee
                                    wrote last edited by
                                    #36

                                    It is cute, isn't it?

                                    1 Reply Last reply
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