Yummi

Well this image means something and we need you to figure it out!

Hint: Water -> Fish, Mud -> ???

Solution All pixels were either black or white, convert to bitstring

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from PIL import Image

img = Image.open('baconian.bmp').convert('RGB')
pixels_orig = img.load()

(w,h)=img.size

s=[]
for j in range(0,w):
    for i in range(0,h):
      (r,g,b) = pixels_orig[j,i]
      s.append(str(r&1))

print ''.join(s)

output

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000000000100010100110010101011011101010100100100100000100000000100111001101010000000001101

File was named baconian.bmp so we suspect a bacon cipher, and indeed when we decode we get the flag

Flag