. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 44° DISCOVERY REPORTS part of the curve (representing the specially large whales). This, approximately, is the result obtained among Fin whales (Fig. 153). The difference between the two maxima represents roughly the normal difference in length between the sexes. When we turn to the Blue whales we find that some of the curves are of quite an unexpected shape. In the 1926-7 season, when the majority were fully grown, the curves are of the normal type found in Fin whales with one marked apex for
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 44° DISCOVERY REPORTS part of the curve (representing the specially large whales). This, approximately, is the result obtained among Fin whales (Fig. 153). The difference between the two maxima represents roughly the normal difference in length between the sexes. When we turn to the Blue whales we find that some of the curves are of quite an unexpected shape. In the 1926-7 season, when the majority were fully grown, the curves are of the normal type found in Fin whales with one marked apex for each sex, but in the preceding seasons the curves tend to resolve themselves into several apices 45- 40i 35 30 â 25- 20- 15 10' 5- 30- Q Z15- '10- CQ 5- s Z 0. S. GEORGIA l!lli(i-7. 15 16 17 LENGTH GROUPS (METRES) Fig. 152. Blue whales {continued). Length frequencies for different periods. Females. Males. of comparatively uniform prominence. Perhaps the best example is furnished by the figures for males and females in the half-season February to May 1925. There are three maxima for each sex showing that males are commonest at 18-19 "^v 21 m. and 24 m. and less numerous at 20 m. and 22-23 '^â¢' ^^^ that females are more numerous at 20 m., 23 m. and 26 m. and less numerous at 21-22 m. and 24 m. In other words these whales tend to approximate to one of three different sizes which may be regarded as (i) small immature (18-19 m. in males, 20 m. in females), (2) large immature (21 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
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