I've been collecting the Splatoon Amiibo figures and just got some counterfeit ones from a 3rd party seller on Walmart dot com. I thought I'd share comparison pictures against the genuine article.
amiibo - Pearl & Marina 2-Pack - Nintendo Official Site
UNBOXING - Pearl & Marina Amiibo from Splatoon 2! - YouTube
Marina AMIIBO SPLATOON 2 by GexANIMATOR on DeviantArt
Nintendo Announces New Pearl and Marina Amiibos
Splatoon 2: Pearl and Marina amiibo Unlocks Octo Expansion Inspired Gear for your Inklings & Octolings - Miketendo64
Nintendo Splatoon 2 Off the Hook Amiibo Pearl Marina Figure Combo Japan Ver. 45496893521 | eBay
Pearl & Marina Amiibo 2-Pack - Splatoon Series [Nintendo Accessory] — MyShopville
Nintendo amiibo Splatoon series 1 & 2 & 3 All set Japan – GLIT Japanese Hobby Shop
Nintendo amiibo Figure 2-Pack (Splatoon series Pearl & Marina) NVLEAE2D - Best Buy
Nintendo Amiibo Marina (Splatoon Series) Japan Ver. | Shopping from Microsoft Start
Nintendo Amiibo Splatoon 2 Marina Switch Wii U figure 4902370539516 | eBay
figma Splatoon 2 Tentacles Off the Hook Pearl & Marina Action Figure J — ToysOneJapan
Squid Sisters and Off the Hook amiibo restocks on the way for Splatoon 3 - Nintendo Wire