negative regulation of shell calcification
down regulation of shell calcification
exact
down-regulation of shell calcification
exact
downregulation of shell calcification
exact
inhibition of shell calcification
narrow
Any process that stops, prevents or reduces the frequency, rate or extent of shell calcification.
GO:0070168
negative regulation of biomineral tissue development
is_a
GO:1905648
regulation of shell calcification
is_a
GO:0031215
shell calcification
negatively_regulates