Worm pieces and stages make id difficult for all but the most common of worms.

That is why challenge tests are easier than ID.
White worms react to white worm meds, red worms react to red worm meds, flat worms react to flat worm meds, etc.

The second picture, leaves the impression this is a worm piece, irregular in side (wider)
The thickness and large diameter of the inside, lend credence to a Ascaris like ascarid white worm family.
The irregular skin is a puzzle, it certainly does not look like a marine parasite.

White worms are typically attacked using white worm meds, like Albendazole, Mebendazole for eggs, Papain 2000 units per cc in cranberry juice sipped, OxBendazole.

As of late, we have dosed thymus vulgaris leaf and oil caps, which make the worms vomit, clear out their digestive bacteria, and cause them to come out in mass. The GI system is cleared. Any systemic worms require meds.

Slowly ramp thyme leaf caps, say Swansons, to 100 or 200 mg/kg, and I like adding oil caps too, thyme, oregano, clove caps from alpine clinic. Ortho also makes one.

https://www.orthomolecularproducts.com/intestin-ol/

White worms hate the stuff, and come out in such large volume it is unbelievable.

Thyme is also a great maintenance method, if you have one last worm that does not want to go, the natural thyme oregano can sit on the worm easily, until it is gone.

You also may find elimination and cure from these worms may require addressing stages, DEC is useful for filarial stage. Mebendazole and or papain enzyme kill or digest the eggs, which may present as acid reflux in throat, sinus dripping or burn.

If you have other co-infections like red worms, flat worms, protozoans, etc, a cure may be difficult.

Typically we find that once a worm is eliminated or suppressed, other infections or the next significant infection may present..., and require id, and formulation to eliminate it, until all the infections are dealt with.

Matt