Which Skins, Lord?

Exodus 35: 23 "And every man, with whom was found blue, purple, and scarlet [thread], fine linen, and goats' [hair], red skins of rams, and badger skins, brought [them]." KJV, NKJV, YLT
"Everyone who had blue, purple or scarlet yarn or fine linen, or goat hair, ram skins dyed red or hides of sea cows brought them." NIV
"Every man, who had in his possession blue and purple and scarlet material and fine linen and goats' hair and rams' skins dyed red and porpoise skins, brought them." NASB
"All those who owned the following items willingly brought them: blue, purple, and scarlet thread; fine linen and goat hair for cloth; and tanned ram skins and fine goatskin leather" NLT, ESV
 
Lord,
So many different animal skins:  There is such a huge difference in badger skins, sea cow hides, porpoise skins, and goat skins.  They are so very different.  I don't know where the Israelites would have been able to get the hides of sea cows or porpoises.  Badgers, as we know them, do not live in the dessert at least now.    Goat skins seem to be the most realistic...but which one is it, Lord?  It does not matter, really, I suppose...just wondering.