Vánoční stromeček omalovánky – podmořská scéna pro děti

Black-and-white coloring page illustration of: underwater ocean scene kids. Audience: kids 6-10, very simple (toddler) detail, zentangle / doodle drawing style. Pure black outlines on white background, no shading, no fill, no grayscale, no gradient. Closed shapes ready for crayon / marker. Clean printable line-art at high contrast, no watermarks. Wholesome family-friendly imagery only. No graphic content, no scary or violent themes for kids audiences. Specifically: underwater ocean scene kids. Target search intent (rendered visually, no on-image text): "vánoční stromeček omalovánky" (cs).