Ostrovegan 

A person who is otherwise vegan, but is ok with consuming some bivalves (oysters, muscles, clams) under certain conditions.

Jaylen's an ostrovegan, so he'll happily eat oysters.

Ostrovegan by Sierra Thoreau December 28, 2017

Ostrovegan 

A type of ethical vegan lifestyle and a specific diet, identical in purpose and rationality to a traditional ethical vegan lifestyle, while closely identical to a traditional vegan diet. An ostrovegan diet is what would be a traditional vegan diet, with the exception of bivalves that have no brain and central nervous system (oysters, mussels, clams, scallops).

Ostrovegans are comfortable with eating some bivalves for the same reason they are not bothered by eating plants; both plants and these bivalves have no brain or central nervous system and therefore no known sentience (suffering, feeling)-- being made of animal cells instead of plant cells does not change this commonality. No one goes vegan because they just do not want to eat animal cells, a further reason is necessary; ethical vegans exist because almost all animals suffer, and they do not want to cause this suffering with no human necessity to. Ostrovegans follow and share this goal and awareness of all existent animal suffering.

Ostrovegans often face misrepresentation and false accusations based on assumption. These bivalves are cells that grew but never became sentient, just like lab-grown meat (cultivated animal cells).

Since this diet and lifestyle identically aligns morally with an ethical vegan diet and lifestyle, and this diet is almost identical to a typical vegan diet, it makes more sense to have a distinguished type of "vegan" if only for clarity on moral belief and restrictions.

Natalie wants her wedding menu to be ostrovegan.

Samuel is an ostrovegan.

Ostrovegan by Schoolofvegan March 13, 2023

ostrovegan 

A vegan who finds an excuse for eating oysters by claiming oysters belong in the plant kingdom instead of the animal kingdom. Ostrovegans do not eat any meat or animal byproduct like milk, cheese, honey, etc. except for when it comes to oysters based on the idea that oysters probably do not feel pain.

Guy: These bivalves look delicious.

Girl: I thought you were vegan?

Guy: No worries, oysters are basically plants. I'm ostrovegan.

ostrovegan by lilspiker January 1, 2017