A full face mask and rigid snorkel for use during exploration of aquatic environments comprising: the full face mask defined by a top, a bottom, a left side and a right side, the full face mask including: a rigid support structure defining a shape of the full face mask; a full face seal coupled to the rigid support structure, the full face seal made of a flexible resilient material for creating a seal between the full face mask and a face of a user when worn by the user; and a separation seal dividing the full face mask into at least an upper chamber, in particular as an optical chamber with a transparent lens covering the eyes of the user when worn by the user, sealed from a lower chamber, in particular as a respiratory chamber that creates an under-water air encapsulated respiratory air supply for the user to breathe surface air circulated from the rigid snorkel into the upper chamber, by the separation seal, wherein the separation seal includes a separation seal valve, the separation seal valve allowing air to pass through the separation seal under negative pressure in the lower chamber of the full face mask but occluding air from passing through the separation seal under positive pressure in the lower chamber of the full face mask; and the rigid snorkel is connectable to or formed integral with the left side or the right side of the full face mask for accessing the upper chamber and lower chamber proximate to a location where the separation seal meets the full face seal on the side of the full face mask, the rigid snorkel including: an air intake channel extending along a length of the rigid snorkel for intake of surface air into the upper chamber of the full face mask; and an exhaust channel extending along a length of the rigid snorkel for exhaust of respirated air from the lower chamber of the full face mask. the full face mask defined by a top, a bottom, a left side and a right side, the full face mask including: a rigid support structure defining a shape of the full face mask; a full face seal coupled to the rigid support structure, the full face seal made of a flexible resilient material for creating a seal between the full face mask and a face of a user when worn by the user; and a separation seal dividing the full face mask into at least an upper chamber, in particular as an optical chamber with a transparent lens covering the eyes of the user when worn by the user, sealed from a lower chamber, in particular as a respiratory chamber that creates an under-water air encapsulated respiratory air supply for the user to breathe surface air circulated from the rigid snorkel into the upper chamber, by the separation seal, wherein the separation seal includes a separation seal valve, the separation seal valve allowing air to pass through the separation seal under negative pressure in the lower chamber of the full face mask but occluding air from passing through the separation seal under positive pressure in the lower chamber of the full face mask; and a rigid support structure defining a shape of the full face mask; a full face seal coupled to the rigid support structure, the full face seal made of a flexible resilient material for creating a seal between the full face mask and a face of a user when worn by the user; and a separation seal dividing the full face mask into at least an upper chamber, in particular as an optical chamber with a transparent lens covering the eyes of the user when worn by the user, sealed from a lower chamber, in particular as a respiratory chamber that creates an under-water air encapsulated respiratory air supply for the user to breathe surface air circulated from the rigid snorkel into the upper chamber, by the separation seal, wherein the separation seal includes a separation seal valve, the separation seal valve allowing air to pass through the separation seal under negative pressure in the lower chamber of the full face mask but occluding air from passing through the separation seal under positive pressure in the lower chamber of the full face mask; and the rigid snorkel is connectable to or formed integral with the left side or the right side of the full face mask for accessing the upper chamber and lower chamber proximate to a location where the separation seal meets the full face seal on the side of the full face mask, the rigid snorkel including: an air intake channel extending along a length of the rigid snorkel for intake of surface air into the upper chamber of the full face mask; and an exhaust channel extending along a length of the rigid snorkel for exhaust of respirated air from the lower chamber of the full face mask. an air intake channel extending along a length of the rigid snorkel for intake of surface air into the upper chamber of the full face mask; and an exhaust channel extending along a length of the rigid snorkel for exhaust of respirated air from the lower chamber of the full face mask.