No Such Animal
There is no such thing as a "sea canary." You may be thinking of:
Canary: A small songbird, often kept as a pet. These are not found in the sea.
Seabird: A general term for birds that live in or near the ocean. Examples include penguins, albatrosses, and gulls.
If you can provide more context about what you are looking for, I can help further. For example, are you trying to find a particular type of seabird?