pls.read it..

1. Article1 of the 1987 Philippine Constitution defines the territory of the Philippines as follows:
"The national territory comprises the Philippine Archipelago, with all the islands and waters
embraced therein, and all other territories over which the Philippines has sovereignty or jurisdiction,
consisting of its terrestrial, fluvial, and aerial domain, including its territorial sea, the seabed, the
subsoil, the insular shelves, and other submarine areas. The waters, around, between and
connecting the islands of the archipelago, regardless of their breadth and dimensions, shall form part
of the internal waters of the Philippines."
Otherareas includedinthe PhilippineArchipelago(5)
o -The territorial sea
o -The seabed/seafloor/seabottom
o -The subsoil
o -Insularshelves/Continental Shelves
o -Othersubmarine areas
The inlandor internal watersandthe territorial seatogether
Territorial Waters
The national territorycomprisesthe Philippine archipelago,withall the islandsandwaters
embracedtherein,andall otherterritoriesoverwhichthe Philippineshassovereigntyor
jurisdiction,consistingof itsterrestrial,fluvial,andaerial domains,includingitsterritorial sea,
the seabed,the subsoil,the insularshelves,andothersubmarine areas.The wateraround,
between,andconnectingthe islandsof the archipelago,regardlessof theirbreadthand
dimensions,formpartof the internal watersof the Philippines.
Section1
derivedfromthe Greekword"pelagos"meaning,sea.Itisa seaor part of a sea studded with
islands,oftensynonymouswithislandgroup,orasa large group of islandsinan extensive body
of water,suchas sea.Archipelago-Theyare the partsof the seawithinthe landterritory.-They
are consideredinthe same lightasrivers,canals,andlakeswithinthe landterritoryof astate.-
Theyare sometimescalled"national waters."Inland/InternalWaters-Itisthatpartof the sea
extending12 nautical miles(19kms) fromthe low-watermark.Itisalsocalledthe "marginal sea,"
the "marginal belt,"orthe "marine belt."The Territorial Sea-Theyare submergedportionsof a
continentoroffshore island,whichslope gentlyseawardfromthe low waterlinetoa point
where a substantial breakingrade occurs,at whichpointthe bottomslopesseawardata
considerable increase inslopeuntil the greatoceandepthsare reached.Insular/Continental
Shelves-Theyare watersthatlie seawardof the territorial sea.High/OpenSeas-Theyrefertoall
areas underthe territorial sea.OtherSubmarine Areas-Itisthe beltof wateroutside andparallel
to the coastline orto the outerlimitsof the inlandorinternal waters.

2. Territorial Sea(supra.)-NationalTerritoryof the Philippinescomprises(4):
o -The PhilippineArchipelagowithall the islandsandwatersembracedtherein.
o -All otherterritoriesoverwhichthe Philippineshassovereigntyorjurisdiction.
o -The terrestrial,fluvial,andaerial domainsincludingthe territorial sea,the seabed,the
subsoil,the insularshelves,andothersubmarineareasthereof.
o -The internal waters.
1. othersubmarine areas(8)
o -seamount
o -trough
o -trench
o -basin
o -deep
o -bank
o -shoal
o -reef
Three-foldDivisionofNavigable Waters
o -Inland/Internal Waters
o -Territorial Sea(supra.)
o -High/OpenSeas
Necessityof Constitutional ProvisiononNational Territory(3)
o -Bindingforce of suchprovisionunderinternational law.
o -Value of provisiondefiningournational territory.
o -Acquisitionof otherterritories
Thisrefersto the landthat holdsthe sea,lyingbeyondthe seashore,includingmineral
and natural resources.
The seabed/seafloor/seabottom Thisreferstoeverythingbeneaththe surface soil andthe
seabed,includingmineral andnatural resources.
The subsoil Thisconceptismeantthat an archipelagoshall be regardedasa single unit,sothat
the watersaround,between,andconnectingthe islandsof the archipelago,irrespective of their
breadthand dimensions,formpartof the internal watersof the state,subjecttoitsexclusive
sovereignty.
ArchipelagicConcept/ArchipelagoDoctrine