The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Not sure if this is related to the Nami you get in Google image search, but hey, it’s nice!
Source Dertig Media
Zero CC tileable hard cover green book, scanned and made by me. CC0
Source Sojan Janso
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Prismatic Geometric Tessellation Pattern 2 No Background
Source GDJ
A version without colours blended together to give a different look.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Neat little photography icon pattern.
Source Hossam Elbialy
Prismatic Rounded Squares Grid 4 No Background
Source GDJ
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
A dark brown fabric-like background texture with seamless pattern of winding stripes.
Source V. Hartikainen
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin