I want draw a simple shark.
\begin{tikzpicture}
\draw[fill=#1] (1,1) to[bend left=50] (3,1) to[bend left=50]
(1,1);
\draw[fill=#1] (3,1) -- (3.5,1.5) -- (3.3,1) -- (3.5,.5) -- cycle;
\draw[fill=white] (1.6,1.1) circle (.15cm);
\draw[fill=#1] (1.55,1.1) circle (.05cm);
\end{tikzpicture}
