glNormal3f(0, 0, 1);
    glColor4fv(colour_);
    glBegin(GL_POLYGON); //Naive.  Why are triangles better?
    glVertex3f(53.0, -20.0, 0);
    glVertex3f(53.0, 18.0, 0);
    glVertex3f(25.0, 40.0, 0);
    glVertex3f(-10.0, 40, 0);
    glVertex3f(-30.0, 35, 0);
    glVertex3f(-60.0, 20, 0);
    glVertex3f(-70.0, 15, 0);
    glVertex3f(-80.0, 12, 0);
    glVertex3f(-80.0, -10, 0);
    glVertex3f(-60.0, -15, 0);
    glEnd();

    // Salmon tail (sans fins).
    glBegin(GL_TRIANGLES);

    glVertex3f(-80.0, 12, 0);
    glVertex3f(-130.0, 30, 0);
    glVertex3f(-80.0, -10, 0);

    glVertex3f(-80.0, 12, 0);
    glVertex3f(-130.0, -30, 0);
    glVertex3f(-80.0, -10, 0);
    glEnd();

    // Salmon belly, dorsal fins, and contours (lighter).
    float belly_[] = { 0.98, 0.45, 0.04, 1.0 };
    glColor4fv(belly_);
    glPushMatrix();
    glScalef(1, 0.4, 0.0);
    glBegin(GL_POLYGON);
    for (double i = (6.8 / 6 ) * M_PI; i < 1.9 * M_PI; i += M_PI / 6) {
        glVertex3f(cos(i) * (1.2 * length_), sin(i) * length_, 0.0);
    }
    glEnd();
    glPopMatrix();

    glBegin(GL_TRIANGLES);

    glVertex3f(-40.0, 25, 0);
    glVertex3f(-70.0, 10, 0);
    glVertex3f(-80.0, 10, 0);

    glVertex3f(25.0, -5.0, 0);
    glVertex3f(45.0, 20.0, 0);
    glVertex3f(35.0, 15.0, 0);

    glVertex3f(-90.0, 0, 0);
    glVertex3f(-130.0, 30, 0);
    glVertex3f(-110.0, 0, 0);

    glVertex3f(-90.0, 0, 0);
    glVertex3f(-130.0, -30, 0);
    glVertex3f(-110.0, 0, 0);

    glVertex3f(-60.0, 20, 0);
    glVertex3f(-70.0, 15, 0);
    glVertex3f(-75.0, 22, 0);

    glVertex3f(-10.0, 40, 0);
    glVertex3f(-30.0, 35, 0);
    glVertex3f(-30.0, 60, 0);

    glVertex3f(-30.0, 35, 0);
    glVertex3f(-30.0, 60, 0);
    glVertex3f(-50.0, 35, 0);

    glVertex3f(-30.0, 35, 0);
    glVertex3f(-40.0, 30, 0);
    glVertex3f(-50.0, 35, 0);

    glEnd();

    // Green lowlights.
    float lowlights_[] = { 0.17, 0.49, 0.27, 1.0 };
    glColor4fv(lowlights_);
    glBegin(GL_TRIANGLES);

    glVertex3f(-85.0, 0, 0);
    glVertex3f(-125.0, -28, 0);
    glVertex3f(-90.0, 0, 0);

    glEnd();

    // Green highlights.
    float highlights_[] = { 0.37, 0.67, 0.35, 1.0 };
    glColor4fv(highlights_);
    glBegin(GL_TRIANGLES);

    glVertex3f(-90.0, 0, 0);
    glVertex3f(-130.0, 30, 0);
    glVertex3f(-110.0, 0, 0);

    glVertex3f(-90.0, 0, 0);
    glVertex3f(-130.0, -30, 0);
    glVertex3f(-110.0, 0, 0);

    glEnd();

    // Salmon fins (same colour as body to contrast with belly).
    glColor4fv(colour_);
    glBegin(GL_TRIANGLES);

    glVertex3f(40.0, -15.0, 0);
    glVertex3f(15.0, -20.0, 0);
    glVertex3f(30.0, -40, 0);

    glVertex3f(0.0, -25.0, 0);
    glVertex3f(-20.0, -25.0, 0);
    glVertex3f(-25.0, -35, 0);

    glVertex3f(-60.0, -20, 0);
    glVertex3f(-70.0, -15, 0);
    glVertex3f(-75.0, -22, 0);

    glEnd();

    // Face and top mandible (greenish).
    float face_[] = { 0.37, 0.67, 0.35, 1.0 };
    glColor4fv(face_);
    glNormal3f(0, 0, 1);
    glBegin(GL_TRIANGLES);

    glVertex3f(35.0, -5.0, 0);
    glVertex3f(55.0, 17.0, 0);
    glVertex3f(100.0, 10, 0);

    glVertex3f(35.0, -5.0, 0);
    glVertex3f(100.0, 10, 0);
    glVertex3f(60.0, -17, 0);

    glVertex3f(100.0, 10, 0);
    glVertex3f(93.0, -5, 0);
    glVertex3f(86.0, 10, 0);

    glEnd();

    // Lower mandible (darker green).
    float jaw_[] = { 0.17, 0.49, 0.27, 1.0 };
    glColor4fv(jaw_);
    glBegin(GL_TRIANGLES);

    glVertex3f(37.0, -7.0, 0);
    glVertex3f(37.0, -25.0, 0);
    glVertex3f(75.0, -22, 0);

    glVertex3f(55.0, -20.0, 0);
    glVertex3f(100.0, -10.0, 0);
    glVertex3f(75.0, -22, 0);

    glEnd();

    // Eye
    glPushMatrix();
    glTranslatef(50, 0, 0);
    const float white[] = {1.0, 1.0, 1.0, 1.0};
    glColor4fv(white);
    glNormal3f(0, 0, 1);
    glBegin(GL_POLYGON);
    for (double i = 0.0; i < 2 * M_PI; i += M_PI / 6)
        glVertex3f(cos(i) * 4, sin(i) * 4, 0.0);
    glEnd();
    glTranslatef(1, 0, 0);
    const float black[] = {0.0, 0.0, 0.0, 1.0};
    glColor4fv(black);
    glNormal3f(0, 0, 1);
    glBegin(GL_POLYGON);
    for (double i = 0.0; i < 2 * M_PI; i += M_PI / 6)
        glVertex3f(cos(i) * 2, sin(i) * 2, 0.0);
    glEnd();
    glPopMatrix();

    // Restore the transformation matrix.
    glPopMatrix();