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Most of us go swimming so we can have a chance to swim with the marvellous sea life. And naturally, we want to do what we can to attract fish to us while we’re snorkelling and avoid keeping them away. For that reason, a question we get asked a lot here at Ninja Shark is, what colour do fish see the best? And it’s an interesting one at that!
In this article we’ll look at how colours change underwater according to how deep you are below the surface, which colours are most visible to fish, and which colours are most invisible to fish. You can then decide whether you want to call attention to yourself while snorkelling or stay incognito!
How do fish see underwater?
The basic principle you’ll need to understand here is that fish don’t have the same sense of sight that we do. Colours will almost always appear different underwater than in air, and when you add a fish to the mix, even more different. You may have read our article about how colour appears underwater.
Basically, as light moves through water it changes many of its characteristics. When light first hits water, it decreases in intensity and changes colour due to scattering and absorption. Scattering can kind of be described like the way smoke or fog dissipates in the air, except with light underwater. Absorption is just what it sounds like, with colours being absorbed depending on their wavelength and the depth of the water.
What colours do fish see the best?
We can’t really say what fish see exactly, as no scientist has ever been able to communicate with one to find out, but we sure can guess. The basic conclusion is that certain fish will be attracted to certain colours depending on the type of fish, time of day, transparency of water, weather, and maybe even time of year.
That said, we’ve got the following suggestions for those of you who really want to attract the fishies:
Colour combos that attract fish
Many fishermen use lures with a combination of two colours that tends to be successful in luring fish. If you want to try do the same, go for these colour combinations:
Of course, these colours typically exist to mimic the colours of a fish, so it may not work when you’re human-sized. That said, if you’re that set on attracting fish then go all out on your snorkelling outfit!
“The mask include GOPRO mounts, so you can easily film and photograph underwater scenery! I highly recommend especially to people who have a fear of snorkeling! This mask is really easy to use and is safe!” said @lud.around. “I can’t wait for my next trip with my new mask!”
Loved the complete set. I even used the waterproof phone pouch to take photos and videos underwater. It made my Fiji experience so much better than using the free snorkel set that hurt your face after 2hours and leaving a sun/mask mark. The ninja leaves no marks and gives great vision under water in comparison. It did take some getting used to but it definitely paid off! Only frustration is that the tightening straps are quite basic; they should be much simpler to loosen and tighten both in and out of water.” – Jock