1:21א׳:כ״א
1 א

התנינם. דָּגִים גְּדוֹלִים שֶׁבַּיָּם, וּבְדִבְרֵי אַגָּדָה הוּא לִוְיָתָן וּבֶן זוּגוֹ שֶׁבְּרָאָם זָכָר וּנְקֵבָה וְהָרַג אֶת הַנְּקֵבָה וּמְלָחָהּ לַצַּדִּיקִים לֶעָתִיד לָבֹא, שֶׁאִם יִפְרוּ וְיִרְבּוּ לֹא יִתְקַיֵּם הָעוֹלָם בִּפְנֵיהֶם:

התנינים THE HUGE CREATURES — the large fishes that are in the sea; and according to the statement of the Agada (Bava Batra 74b) it means here the Leviathan and its consort which He created male and female. He, however, killed the female and preserved it in salt for the benefit of the righteous in the time to come, for had they been permitted to be fruitful and to multiply the world could not have endured because of them.

2 ב

נפש החיה. שֶׁיֵּש בָּהּ חַיּוּת:

נפש חיה — that have vitality.