  This study deals with the new class of embedded wormhole solutions in the
background of general relativity. Two newly calculated wormhole solutions
satisfy all the required properties. All the energy conditions are discussed
through their validity regions for the different ranges of involved parameters.
In maximum regions, all energy conditions are violated. We investigate the
shadow and strong gravitational lensing by the wormhole throat for the two new
wormhole models, namely Model-I and Model-II. The present paper considers the
wormhole throat to act as a photon sphere. We first derive null geodesics using
the Hamilton-Jacobi separation method to investigate the shadow and strong
gravitational lensing caused by the wormhole throat. We then numerically obtain
the radius of wormhole shadow, strong deflection angle, and various lensing
observables by taking the example of supermassive black M87* and Sgr A* in the
context of both Model-I and Model-II. Keeping all other parameters fixed, it is
observed that the parameters $\zeta_1$ and $\zeta_2$ for Model-I; and $\chi_1$
and $\chi_2$ for Model-II have significant effects on the wormhole shadow and
strong gravitational lensing phenomena. Our conclusion is that it is possible
to detect relativistic images, such as Einstein rings, produced by wormholes
with throat radii of $r_{th}=3M$. Additionally, current technology enables us
to test hypotheses related to astrophysical wormholes.
