Sentence 1: Euthria effendyi is a species of sea snail , a marine gastropod mollusc in the family Buccinidae , the true whelks .
Sentence 2: Euthria effendyi is a species of sea snail , a true gastropod mollusc in the Buccinidae family , the navy whelks .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?