5 Hryven Hermit crab

Ukraine's ongoing "Flora and Fauna" series has produced dozens of issues since the early 2000s, and this hermit crab entry continues the National Bank's pattern of spotlighting ecologically significant or underrepresented species in domestic waters — in this case almost certainly referencing the Black Sea hermit crab, Pagurus anachoretus, present in Ukrainian coastal zones. The 5 hryvnia face value places it in the mid-tier bimetallic collector category, struck in nickel brass rather than silver, keeping it accessible outside the bullion series.