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In this manuscript, we study photonsphere, shadow, quasinormal modes, Hawkingtemperature, and greybody bounds of a non-rotating Simpson-Visser black holewhich is a regular black hole. We observe that though the radius of thephotonsphere does depend on the Simpson-Visser parameter $\alpha$, the shadowradius is independent of it. The shadow radius is found to be equal to that forSchwarzschild black hole. We, then, study quasinormal frequencies of theSimpson-Visser black hole for scalar and electromagnetic perturbations with thehelp of $6$th order WKB method. We tabulate values of quasinormal frequenciesfor various values of $\alpha$, angular momentum $\ell$, and overtone number$n$. We also graphically show the dependence of real and imaginary parts ofquasinormal frequency on $\alpha$ and $\ell$. Additionally, We study theconvergence of the WKB method for various values of pair $(n,\ell)$. Finally,we shed light on the dependence of the Hawking temperature on the parameter$\alpha$ and the dependence of greybody bounds on $\alpha$ and $\ell$.

Photonsphere, shadow, quasinormal modes, and greybody bounds of non-rotating Simpson-Visser black hole