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TABLE 10. proportions of l'arts of the Body of Some Antarctic
Whales (expressed as -.?ercentages of the total body weiL--:ht).
(From K. A. Mrocl-A>ov, 1968 a, 1968 b.)
Kef: 1) Parts of body. 2) I-1tiuap-back whales. 3) Males.
4Fema.les. 5) Range of variation. 6) Average. 7) Fin whales.
8^ Sei whales.
9) Subcutaneous blubber. 10) l'eritôneum, tongue. 11) Head.
12) Lower jaw. 13) Sine and caudal section. 14) Ribs with flesh,
flippers, and flukes. 15) --'lesh (total). 16) including: 17) dorsal.
18; ventral. 19) Viscera (total). 20) Pluck. 21) Liver.
22) Stomach and intestineu. 23) Balee,n plates with :gums.
Most blue whales mate once in tVro.or three years. The males
attain physical maturity at a body length of about 24.0 metres, and
the females at 26.0 or 26.5 metres.
The height of the spout is usually from seven to nine metres,
but occasionally it reaches 10-12 metres or even 15 metres. The
;•ri-lal es'
be£17-vl.olir on the surface is a7.^lost the same as that' of blue
whales in the northern hemispliere. In tne fattenin;,-C:rounà.s they
usually stay under water for five to ten minutes. 1'41nile under water