17 The description is of the animal, not the hunter (or fisherman). Leviathan is so fierce that no one can take him on alone.
18 has “before me” and can best be rendered as “Who then is he that can stand before me?” (ESV, , , , ). The following verse (11) favors the since both express the lesson to be learned from Leviathan: If a man cannot stand up to Leviathan, how can he stand up to its creator? The translation above has chosen to read the text as “before him” (cf. , ).
19 The verb קָדַם (qadam) means “to come to meet; to come before; to confront” to the face.
20 The verse seems an intrusion (and so E. Dhorme, H. H. Rowley, and many others change the pronouns to make it refer to the animal). But what the text is saying is that it is more dangerous to confront God than to confront this animal.
21 This line also focuses on the sovereign God rather than Leviathan. H. H. Rowley, however, wants to change לִי־חוּא (li-hu’, “it [belongs] to me”) into לֹא הוּא (lo’ hu’, “there is no one”). So it would say that there is no one under the whole heaven who could challenge Leviathan and live, rather than saying it is more dangerous to challenge God to make him repay.
22 Dhorme changes the noun into a verb, “I will tell,” and the last two words into אֵין עֶרֶךְ (’en ’erekh, “there is no comparison”). The result is “I will tell of his incomparable might.”

In other versions

No one is so fierce that he dares to stir him up.

Who then is he who can stand before me?

Who has first given to me, that I should repay him?

Whatever is under the whole heaven is mine.

“I will not keep silence concerning his limbs,

or his mighty strength, or his goodly frame.

No one is fierce enough to rouse it.

Who then is able to stand against me?

Who has a claim against me that I must pay?

Everything under heaven belongs to me.

“I will not fail to speak of Leviathan’s limbs,

its strength and its graceful form.

No one is ferocious enough to rouse Leviathan;

who then can stand against me?

Who confronted me, that I should repay him?

Everything under heaven belongs to me.

I cannot be silent about his limbs,

his power, and his graceful proportions.

And since no one dares to disturb it,

who then can stand up to me?

Who has given me anything that I need to pay back?

Everything under heaven is mine.

“I want to emphasize Leviathan’s limbs

and its enormous strength and graceful form.

Is it not fierce when somebody stirs it?

Who then is he who would stand before it?

Who has come to confront me, that I should repay him?

Under all the heavens, it belongs to me.

“I will not keep quiet concerning its limbs

or concerning the extent of its might and the gracefulness of its frame.

None is so fierce that dare stir him up:

Who then is able to stand before me?

Who hath prevented me, that I should repay him?

Whatsoever is under the whole heaven is mine.

I will not conceal his parts,

Nor his power, nor his comely proportion.

Public Domain