Most visible color on the sea bottom?

SEM dye works good on plastics and vinyl, I think a high viz neonish green/yellow would be the most visible

When you take ROYGBIV into account, I wonder how a neon purple would work.. I love my white float line.. Highly visible

even though you wouldnt think blue,, i saw my blue omer mask that had been lost for a week diving in bad viz at a decent depth, it stuck out from everything around it. that being said i too am not a fan of bright colors. black is where it is at

Quote from Dan

Are SEM dyes sold at pep boys or advanced auto parts? How are dyes different than vinyl and plastic spray paint? Do you think it will hold up to salt water?

I believe they sell an aerosol version, we use the custom color matched ones at the shop, it holds up on automotive interiors and rag tops that bake in the sun, not sure how it would fair in the salt though :confused1: its really a paint that is supposed to "dye" or penetrate the surface. heres a pic of neon yellow above and under water I found with a quick google search and a pic of C4 81's

Middle of the spectrum ....Yellow, Green and Blue.

Cheers, Don

yellow always seems to show up no mater what the depth is
phil

Quote from phil herranen

yellow always seems to show up no mater what the depth is
phil

I have one very old commercial abb iron, your right they would know best, agreed.

Cheers, Don

Y red?,
Plastic paint primer must be given a special plastic (the plastic they use for car ejpl) before, then wish you paint.
For me the best color if we get something in the background is white, the small ojjetos confused if we put a bright color

I think Japsw is right. Neon Yellow for sure. A friend gave me a pelican saberlite 2000 underwater flashlight. Its neon yellow and its fallen off my waist/been dropped a bunch of times and its always extremely visible. Even when I can't see the bottom well I've often been able to see the body of the light from the surface. The color seems to reflect all the available light. Here is a picture of mine in my dark bedroom this morning. (carpet is light beige brown). And of me on the surface. I have a pursuits red knife on my other hip for comparison.

Surprisingly, white is really easy to see against the bottom. It also reflects really well, so it's easy to pick out in murky water. If I lay one of my guns with an OMER handle on the bottom, I can spot the handle before I can see the yellow float line attached to it.

Yellow first, then White. White is brighter than you would think.

I took this white adhesive foil, for when I drop the rifle on the algae, with the weight of the rod is almost always upward

I don't have a personal need for a knife I can see on the bottom, as it would be a Jim Suit dive to get it back.;)
I like accessories that match my Gf'S skin tone and Binni top. :cool2:

Cheers, Don

this color or white would be the best. If you happen to drop your knife and its black, you will most likely not find it.

Same goes for flashlights. I would use those 2 colors.

Neon green. The guy I dive with has neon green coated dive weights and on deep dives or in dirty water it is the only thing seen from on the surface.

Yellow or white

Isn't there some science to this? I thought I remembering reading that RED would be a poor color to view at a distance underwater. Oh, I just found the info i was looking for. Color Underwater

And lighting and visibility play a huge role.

I like Black/Grey for knives. I've lost a bunch, but it wasn't the knives fault. It was the Sheath. We need better Sheaths.

Would you want your knife to float?

That's a question I ask sometimes.