Hard, Waxy, Blob-Looking Thing Found During Low Tide. Are you one of the few who know what it is?

• Candle or paraffin wax
  Residues from palm oil distillation
  Rubber
  Solidified sewer grease
  These substances are far more abundant than ambergris and can:

Smooth and bleach over time in seawater
Melt with heat and release smoke—especially if they’ve absorbed water

The Smell Problem: Humans vs Dogs
People expect ambergris to smell unmistakable, but odor is subjective:

Human smell perception relies heavily on association (one person may find it pleasant; another may find it disgusting).
Dogs often prefer rancid odors, so their interest does not confirm authenticity.

Bottom Line: What You Probably Found
Ambergris is exceptionally rare. A waxy, stinky blob is much more likely to be:

Oil residues (petroleum or vegetable-based)
Industrial wax
Sewer grease or other waste products

Practical Takeaway
If you find a strange waxy lump on the beach:

Treat it with caution—many look-alikes are linked to pollution.
Consider whether the odor is something you would want “near your body.”
If it smells unpleasant and rancid, it is most likely not ambergris.