Landseer unlikely to paint this sort of picture? (8)

I believe the answer is:

seascape

I'm a little stuck... Click here to teach me more about this clue!

'sort of picture?' is the definition.
(I know that seascape is a type of painting)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for seascape that I've seen before include "View of the main" , "Marine view" , "Painting genre" , "View of ocean and sky" , "Painting, maybe a Turner" .)

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