The Bottom of the Suez Canal
65
~ '. .
. .
.. . . .
' . . . '
: : ; ' .
' . . '
Fig.25. Map of Lake Timsah (from Fox, 1926)
increased in number and surface over the years: their suitability for settling by
benthic animals has to be considered as intermediate.
Black mud, smelly and gelatinous, "very like that of the Great Bitter Lake"
(Fox, 1926) appears in the north-west corner of Lake Timsah at 7-8 m depth.
Gruvel (1936) reports the presence of black mud "plus ou moins liquide et parfois
fetide" in the middle of the lake. According to this author only Murex tribulus
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