The thorns were probably long spiked thorns (up to 3”) from the acacia tree. I say this because the “Ark of the Covenant” was made of acacia wood. The Ark of the Covenant was all about Atonement.

What does a crown of thorns and a sea monster have in common?
Scripture calls the sea monster “Leviathan” the devil, or Satan who swims in a sea of people. Every reptile is a reference to Satan: dragon, serpent, crocodile, beast, and Leviathan.
Two definitions for Leviathan (other than sea monster) are “to coil” and “a wreath” probably from the coiling and weaving of a serpent (whose teeth is like fangs).
The “wreath” on Jesus’ head became a coiled crown of thorns. It is as though Satan, the poisonous serpent, wrapped himself around Jesus’ head and buried his venomous fangs (thorns) into Jesus’ forehead thus injecting the full reservoir of his poisonous hatred.
Psalm 5:12 For You, O Lord, will bless the righteous; With favor You will surround him as with a shield.
- Shield: Root meaning: H6791 A protecting cactus hedge of thorns.
- To surround the righteous man with a hedge of thorns is picturesque of Jesus’ crown of thorns. The righteous are protected by Jesus’ hedge or crown of thorns.

- Satan accused God of putting a hedge around Job which was the only reason Job worshiped Him. Remove the hedge, said Satan, and Job will curse You, God.
- Satan fought with God to remove the hedge from the righteous Job.
- If Job had cursed God, perhaps Satan would have prevailed as the prosecutor, prohibiting God from protecting the righteous. But God already knew the outcome of Job’s righteousness.