This is Marken, a dog shark (more dog than shark)
He is about the size of a medium-sized dog (but a full grown version of his species can be bigger)
Mostly prefers to be on land but once near water... Yeah, that's pretty much it. lol
Does have soft fur and quite friendly.

Notes:
Unlike shark dogs, his teeth are dog-like instead of being like a shark's triangle ones
However, like a shark, his teeth are replaceable.
His overall design doesn't stay too far from his concept sketch
Made him a bit fluffier than his sketch.