How did his body resemble Tarshish?
Rashi (from Chulin 91b): His body 1 was 2000 Parsa'os, like the size of the sea of Africa.
Malbim: It was like topaz (a gem); his clothing was transparent.
It implies that this is his width, for it learns from here the width of the ladder on which Yakov saw angels ascending and descending. Presumably, Yam Africa is the Indian ocean (it is almost 3000 Parsa'os from Africa to Australia); Chazal call the Atlantic 'Okainus'. (PF)
What is the significance that his face was like lightning, and his eyes like flames?
Malbim citing Mahari: The understanding of a Sechel Nivdal (purely spiritual intellect), compared to human intellect, is like lightning, which flashes and disappears, like it says in the introduction to Moreh ha'Nevuchim.
What are "Margelosav"?
Ibn Ezra: This is like Raglav (his legs).
What is the significance of his arms and legs?
Malbim: They represent the acts of his hands and movement of his legs.
What is "Kalal"?
Rashi: It is refined and golden.
Ibn Ezra: It is Latush (glittering).
Which is "k'Kol Hamon"?
Rashi: Like the clamor of a multitude. It is heard from afar.
