This is because light is composed of particles known as photons. As the photons move away from the black hole, they expend some of their energy as they try to escape from the hole's tremendous gravitational pull. The closer they are to the event horizon, the more energy they need to pull away.
The energy of a photon is proportional to the frequency of its radiation. As a result, light that loses energy will have a reduced frequency, and therefore a longer wavelength. This effect is known as "gravitational redshift." When light has a long wavelength, it is red in color.
your question is possible yes i will see what i can search further more .
That's ONE theory...I believe in when you enter one you become part of it, it feeds and grows. When not feasting they go dormant then eventually will vanish. If still massive enough...they lurk for the next meal or lay in waiting. So cool!!!
i suppose its possoble, though it is highly unlikely that there is anything thats actually alive on the other side of the hole. i suppose we'll never really know, will we? im sorry i couldnt give you a more logical answer but i hope you found this helpful.