1)
Why does it say "Ga'avah Afikei Maginim"?
1.
'Rashi', Ibn Ezra #2: It has great pride in the strength of its shields, i.e. its scales, which protect it like shields.
2.
Ibn Ezra #1: Its teeth are strong like shields.
3.
Malbim: The strong shields around it are of hard bone - they are majestic.
2)
What do we learn from "Sagur Chosam Tzar"?
1.
'Rashi': The seal of its armor, which is narrow, closed and awesome. Every scale clings to it, and to the neighboring scale, so nothing can strike it between them.
2.
Malbim: Every shield is sealed with [a bone like] a hard rock.
