The Ultralounge will be the centre of the activity, transforming into the Dive Bar on Friday evenings, hosting musical acts and performances.
Until 12 June consumers will be able to watch screenings, take part in workshops and listen to talks on issues relating to our oceans.
"Project Ocean has created a wonderful opportunity to use Selfridges’ own unique channels to help conservationists reach a wider audience and raise the stakes for global impact," said co-creator of Project Ocean Alannah Weston.
"We hope our customers will be inspired by the project and make sustainability a part of their everyday lives. Our hope is that 100 years from now, people will be still be able to enjoy the wonders of the ocean and that Selfridges will still be able to sell fish in our stores."
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