Price per 10m section.

This floating Polypropylene line is officially sold as rescue line.
In bright Hi-Vis yellow with a reflective fleck running through it, it is soft to handle, braided and (for Polypropylene) great to knot.

This is NOT to be confused with the awful wirey rubbish sold elsewhere, this rope makes perfect safety line for spearfishing or diving and can be attached to your dive float.
Plenty thick enough not to get tangled in it.

It's also ideal for small rescue boat operations.

Sold in 10m sections, just order the length that you need.