I've had an unusual attracting to ocean fauna and flora lately.
I think it has a little part to do that I was watching the Planet Earth series, and the ocean / water ones were my favorite. It might also have a little to do with a commission I'm doing for a friend, where she wants an ocean-like theme, so I'm constantly looking at pictures, another sketch seen here.
I'm not a sketcher, I'm more a painter - so a lot of my sketches, once the 'general idea' has been made, go unfinished. Blushes. It's nothing against sketching, I'm just more in tune with a paint brush :)