Table 5 Equations to estimate mantle length and body mass from upper and lower hood length of the beak in Muusoctopus aegir Golikov, Gudmundsson & Sabirov, sp. nov. and M. johnsonianus (Allcock, Strugnell, Ruggiero & Collins, 2006) [26]

UHL

ML

ML = 1.92UHL^1.67

n = 28, r² = 0.82, p < 0.0001

ML = 2.61UHL^1.49

n = 6, r² = 0.82, p = 0.0179

BM

BM = 0.03UHL^4.35

n = 28, r² = 0.79, p < 0.0001

BM = 0.03UHL^4.28

n = 6, r² = 0.18, p = 0.41

LHL

ML

ML = 7.37LHL^0.97

n = 28, r² = 0.63, p < 0.0001

ML = 3.57LHL^1.61

n = 6, r² = 0.92, p = 0.0243

BM

ML = 0.91UHL^2.57

n = 28, r² = 0.63, p < 0.0001

ML = 0.07UHL^4.67

n = 6, r² = 0.93, p = 0.0013