Assertion: bluefin tuna's number | /r/RelatedTo | waters of atlantic origin
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text: In confirmation of this hypothesis, a high number of bluefin tuna larvae have been found associated with waters of Atlantic origin (i.e. SSS up to 37.2) or with areas where Atlantic and Mediterranean waters mix (i.e. SSS between 37.2 and 38) and with warm waters (over 20.5°C), mostly ranging from 23.5 to 25°C .