In a proposed class action in Seattle federal court, consumers said labels containing phrases such as "dolphin safe," "responsibly sourced," "sustainable," "wild caught" and "MSC Certified Sustainable Seafood" misled them into believing Amazon's seafood sourcing causes minimal harm to oceans and the environment.

Amazon faces a proposed class-action lawsuit alleging it misled consumers by marketing seafood products with deceptive sustainability claims.

In a proposed class action in Seattle federal court, consumers said labels containing phrases such as "dolphin safe," "responsibly sourced," "sustainable," "wild caught" and "MSC…