A foundation interface device comprising a. an elongated, essentially cylindrical pull-in member arranged to be connected at its trailing end to a conduit in which is arranged a cable, b. a weak-link connection member attached to a leading end of the pull-in member, said weak-link connection member having a first part releasably connected to the pull-in member and a second part connected to the cable, said weak-link connection member being further arranged to be connected to a pull line for pulling in a forward direction, the weak-link connection member arranged to disengage from the pull-in member in response to a predetermined pulling force, while the cable remains connected to the second part, c. a slidable sleeve arranged about a portion of the trailing end of the pull-in member, said slidable sleeve having an abutment portion arranged to abut against an opening in a wall of a structure, whereby in the event pull-in member is pulled by a pull line through said opening, abutment portion will abut against the wall causing the slidable sleeve to slide from an initial forward position to a subsequent rearward position, d. one or more laterally extendable and retractable teeth arranged at the leading end of slidable sleeve and connected to the slidable sleeve by a linkage whereby longitudinal movement of the sleeve from the forward position or the rearward position is translated into a rotational movement of the teeth about an axis, said rotational movement extending or retracting the teeth in a lateral direction with respect to the pull in member, e. said pull-in member arranged to be pulled into an opening in a subsea foundation in a forward direction, wherein the abutment portion is larger than the opening and arranged to abut an outer wall of the foundation thereby preventing the pull-in member from being pulled into the foundation beyond the abutment portion, and wherein the teeth, when in an extended position, are arranged to abut an inner wall of the foundation thereby preventing removal of the pull-in member in a rearward direction beyond the teeth, and wherein the teeth, when in a retracted position caused by the longitudinal movement of the sleeve to the forward position permit removal of the pull-in member from the opening in the rearward direction. a. an elongated, essentially cylindrical pull-in member arranged to be connected at its trailing end to a conduit in which is arranged a cable, b. a weak-link connection member attached to a leading end of the pull-in member, said weak-link connection member having a first part releasably connected to the pull-in member and a second part connected to the cable, said weak-link connection member being further arranged to be connected to a pull line for pulling in a forward direction, the weak-link connection member arranged to disengage from the pull-in member in response to a predetermined pulling force, while the cable remains connected to the second part, c. a slidable sleeve arranged about a portion of the trailing end of the pull-in member, said slidable sleeve having an abutment portion arranged to abut against an opening in a wall of a structure, whereby in the event pull-in member is pulled by a pull line through said opening, abutment portion will abut against the wall causing the slidable sleeve to slide from an initial forward position to a subsequent rearward position, d. one or more laterally extendable and retractable teeth arranged at the leading end of slidable sleeve and connected to the slidable sleeve by a linkage whereby longitudinal movement of the sleeve from the forward position or the rearward position is translated into a rotational movement of the teeth about an axis, said rotational movement extending or retracting the teeth in a lateral direction with respect to the pull in member, e. said pull-in member arranged to be pulled into an opening in a subsea foundation in a forward direction, wherein the abutment portion is larger than the opening and arranged to abut an outer wall of the foundation thereby preventing the pull-in member from being pulled into the foundation beyond the abutment portion, and wherein the teeth, when in an extended position, are arranged to abut an inner wall of the foundation thereby preventing removal of the pull-in member in a rearward direction beyond the teeth, and wherein the teeth, when in a retracted position caused by the longitudinal movement of the sleeve to the forward position permit removal of the pull-in member from the opening in the rearward direction.