A mostly mud bottom which is normal in this part of San Pablo Bay. The shoreline is rocky and culminates in the point for which the park is named. (Which seems ideal conditions for jacksmelt.) The pilings themselves are concrete with little growth but off to the right of the pier are a number of older dilapidated pilings which will attract perch in the winter and spring, although admittedly only the inshore pilings are within casting distance. Water here can be more brackish than farther south and the point extends out into water which is crossed by several species of anadromous fish as they journey to and from the ocean and the inland rivers. Thus, here you can see such anadromous fish as king salmon, steelhead trout, striped bass, shad, white sturgeon and even green sturgeon. All of these may be caught as they cross the area but only the striped bass and sturgeon are caught in an appreciable number. More common are the white croaker (kingfish), perch, flounder, sole, jacksmelt, topsmelt, skates, sharks and bat rays.