Portable and inflatable boat with self-secure and storage arrangement

A portable and inflatable boat, comprising:

• a shell body, comprising a container unit, made of rigid material, having an upper surface, a lower surface, an end surface extended between end sides of said upper surface and said lower surface, and a concave engaging surface extended between said upper surface and said lower surface to define a concave engagement groove;
• and
• an inflatable floating platform, comprising an inflatable floating body which is a hollow body made of durable material and has a circular outer side and a U-shape inner side which defines a U-shape mounting slot extended from said outer side to a central portion of said inflatable floating body, wherein said U-shape inner side forms a convex engagement ridge along said U-shape mounting slot when said inflatable floating body is inflated with air therein, wherein said U-shape mounting slot of said inflatable floating body, after inflation, is configured to have a size and a shape to fittingly receive said shell body therein and said convex engagement ridge of said inflatable floating body, after inflation, is shaped and sized to match and press against said concave engaging surface of said container unit of said shell body so as to engage said shell body with said inflated inflatable floating body due to a predetermined air pressure in said inflatable floating body after inflation.