Skip to main content

This is a new service - your feedback will help us to improve it.

Site of special scientific interest

Porth Seal (St. Martin's) SSSI

Geographical area

About this entity

Fact links
CURIE site-of-special-scientific-interest:1001971 no fact link
Prefix site-of-special-scientific-interest Facts
Reference 1001971 Facts
Name Porth Seal (St. Martin's) SSSI Facts
Quality Authoritative: We have some data from the authoritative source no fact link
Dataset Site of special scientific interest no fact link
Organisation Natural England no fact link
Start date Facts
End date Facts
Entry date 2026-04-23 Facts
Typology geography no fact link
Geometry MULTIPOLYGON (((-6.288911 49.969043, -6.288927 49.96905, -6.288937 49.969062, -6.288943 49.969076, -6.288944 49.969087, -6.288932 49.969109, -6.288916 49.969132, -6.288902 49.969143, -6.288891 49.969143, -6.288877 49.969128, -6.288826 49.969107, -6.288815 49.969093, -6.28885 49.969074, -6.288894 49.969044, -6.288911 49.969043)), ((-6.290636 49.969538, -6.290619 49.969536, -6.290607 49.969527, -6.2906 49.969511, -6.290611 49.969493, -6.290609 49.969486, -6.290594 49.969483, -6.290541 49.969483, -6.290526 49.969476, -6.290523 49.969461, -6.290546 49.969449, -6.290588 49.969435, -6.290609 49.969404, -6.290606 49.969376, -6.290614 49.969355, -6.290626 49.969343, -6.290671 49.969331, -6.290697 49.969326, -6.290754 49.969306, -6.290783 49.969302, -6.290801 49.969306, -6.290872 49.96933, -6.290912 49.969362, -6.290917 49.969372, -6.290913 49.969382, -6.290779 49.969453, -6.290756 49.969477, -6.290752 49.969492, -6.290755 49.969521, -6.29075 49.96953, -6.290755 49.969545, -6.290754 49.969555, -6.290745 49.969559, -6.290736 49.96956, -6.29069 49.969561, -6.290682 49.969555, -6.290682 49.969538, -6.290678 49.969532, -6.290666 49.96953, -6.290636 49.969538)), ((-6.298611 49.971519, -6.298531 49.971517, -6.298406 49.971509, -6.298329 49.971488, -6.298271 49.971484, -6.297993 49.97143, -6.297887 49.9714, -6.297831 49.971374, -6.297754 49.971329, -6.2977 49.971317, -6.297699 49.971301, -6.297679 49.971266, -6.297587 49.97121, -6.29753 49.971191, -6.297512 49.971162, -6.297473 49.971116, -6.297453 49.971052, -6.297448 49.971006, -6.297449 49.970973, -6.297464 49.970903, -6.297485 49.970874, -6.297499 49.970858, -6.297497 49.970839, -6.297499 49.970822, -6.297508 49.970796, -6.297523 49.970735, -6.297527 49.970675, -6.297534 49.970649, -6.29755 49.970626, -6.297561 49.970605, -6.297578 49.970549, -6.297579 49.970537, -6.29757 49.97052, -6.297569 49.970501, -6.297599 49.970432, -6.297612 49.970321, -6.297609 49.970259, -6.297612 49.970212, -6.297606 49.970145, -6.297608 49.970122, -6.297604 49.970106, -6.297606 49.970107, -6.297599 49.970097, -6.297584 49.970084, -6.297573 49.970072, -6.297571 49.970055, -6.297574 49.970049, -6.297575 49.97003, -6.297574 49.97002, -6.297567 49.970006, -6.297565 49.969985, -6.297566 49.969966, -6.297569 49.969951, -6.297576 49.96994, -6.297586 49.969931, -6.297589 49.969918, -6.297588 49.969903, -6.29759 49.969891, -6.297596 49.969882, -6.2976 49.969869, -6.297596 49.969856, -6.297585 49.969841, -6.297588 49.969826, -6.297602 49.969812, -6.297647 49.969729, -6.297657 49.969718, -6.297684 49.969681, -6.297682 49.969665, -6.297669 49.969628, -6.297668 49.969617, -6.297673 49.969598, -6.297683 49.969575, -6.297694 49.96956, -6.297711 49.969546, -6.297753 49.969527, -6.297803 49.969507, -6.297873 49.969475, -6.297914 49.969464, -6.297988 49.969453, -6.298033 49.969438, -6.298057 49.969428, -6.298139 49.969383, -6.298176 49.969365, -6.298277 49.969335, -6.298356 49.969317, -6.298442 49.969301, -6.29848 49.969282, -6.298511 49.969264, -6.298542 49.969255, -6.298569 49.96925, -6.298676 49.969264, -6.298741 49.969266, -6.298837 49.969279, -6.298928 49.969294, -6.299021 49.969304, -6.299086 49.969318, -6.299209 49.969332, -6.299224 49.96933, -6.299255 49.969319, -6.299328 49.969303, -6.299364 49.969314, -6.299424 49.969346, -6.299434 49.969355, -6.299501 49.969368, -6.299543 49.969367, -6.299611 49.969368, -6.299692 49.969376, -6.29977 49.969386, -6.299839 49.969404, -6.299862 49.969404, -6.30004 49.969472, -6.30012 49.969496, -6.300167 49.969521, -6.300262 49.969547, -6.300305 49.969556, -6.300416 49.969624, -6.300451 49.96964, -6.300498 49.969651, -6.300564 49.969656, -6.300622 49.969657, -6.300654 49.969664, -6.300795 49.969713, -6.300871 49.969728, -6.300943 49.96973, -6.301228 49.969793, -6.301219 49.96986, -6.301215 49.969951, -6.301189 49.96993, -6.301149 49.969918, -6.301122 49.969921, -6.301101 49.969932, -6.301076 49.969954, -6.301053 49.969961, -6.301041 49.969951, -6.301044 49.96994, -6.301053 49.969926, -6.301045 49.969915, -6.301015 49.969906, -6.300956 49.969903, -6.300937 49.969889, -6.300923 49.969881, -6.300853 49.969886, -6.300833 49.969868, -6.300786 49.969841, -6.300742 49.969845, -6.30072 49.969849, -6.300697 49.969844, -6.300669 49.969829, -6.30063 49.969802, -6.300629 49.969791, -6.300689 49.96976, -6.3007 49.969742, -6.300694 49.969729, -6.300662 49.969722, -6.300607 49.969726, -6.300553 49.969735, -6.30051 49.969734, -6.300477 49.969727, -6.300422 49.969702, -6.300408 49.9697, -6.300389 49.969704, -6.300325 49.969725, -6.300297 49.969725, -6.300282 49.969717, -6.300282 49.969702, -6.300287 49.969687, -6.300275 49.969677, -6.30021 49.969691, -6.300176 49.969693, -6.300164 49.969684, -6.300151 49.969668, -6.300136 49.969658, -6.300105 49.969657, -6.30008 49.96965, -6.300042 49.969635, -6.300034 49.969628, -6.300028 49.969603, -6.300016 49.969594, -6.299964 49.969587, -6.299916 49.969585, -6.299907 49.969589, -6.299928 49.969603, -6.299952 49.969624, -6.299944 49.969634, -6.299927 49.969632, -6.299899 49.969622, -6.299875 49.969591, -6.299848 49.969571, -6.299792 49.969536, -6.299778 49.969537, -6.299723 49.969575, -6.299697 49.969572, -6.299671 49.969562, -6.299533 49.969573, -6.29952 49.969564, -6.29952 49.969552, -6.299523 49.969541, -6.299518 49.969521, -6.299498 49.969515, -6.299426 49.969527, -6.299406 49.969526, -6.299377 49.969513, -6.299337 49.969504, -6.299216 49.969493, -6.299095 49.969478, -6.299061 49.969488, -6.299019 49.969506, -6.299005 49.969502, -6.298953 49.969449, -6.298924 49.969444, -6.298892 49.969442, -6.298842 49.969443, -6.29876 49.969456, -6.298654 49.969464, -6.298562 49.969483, -6.298497 49.969506, -6.298366 49.969593, -6.298225 49.969709, -6.298077 49.969814, -6.298013 49.969852, -6.29797 49.969884, -6.297951 49.969904, -6.297921 49.96994, -6.297891 49.96997, -6.297843 49.970011, -6.297835 49.970025, -6.297831 49.970048, -6.29784 49.970092, -6.297829 49.970114, -6.297807 49.97015, -6.297812 49.970171, -6.297825 49.97019, -6.297813 49.970232, -6.297807 49.970286, -6.297799 49.970308, -6.297751 49.970367, -6.297767 49.970395, -6.297765 49.970433, -6.29774 49.970491, -6.29774 49.970584, -6.297729 49.970607, -6.297713 49.970629, -6.297718 49.97065, -6.29773 49.970664, -6.297745 49.970704, -6.29774 49.970732, -6.297684 49.970755, -6.297671 49.970768, -6.297684 49.970776, -6.297693 49.970794, -6.297678 49.970805, -6.297661 49.970813, -6.297648 49.970824, -6.297651 49.970839, -6.297668 49.970858, -6.29767 49.970893, -6.297682 49.970948, -6.297694 49.970977, -6.29771 49.971003, -6.297739 49.971064, -6.297766 49.971149, -6.297814 49.971202, -6.297835 49.97122, -6.297848 49.971236, -6.297883 49.971255, -6.297925 49.971273, -6.298023 49.971306, -6.298113 49.971331, -6.298194 49.971346, -6.298245 49.971337, -6.298322 49.971329, -6.29837 49.971337, -6.298385 49.971346, -6.29844 49.971368, -6.298481 49.971387, -6.298522 49.971414, -6.298566 49.971431, -6.298641 49.971449, -6.298692 49.971451, -6.298741 49.971438, -6.298765 49.97144, -6.298798 49.971452, -6.298851 49.971447, -6.298931 49.971458, -6.298957 49.971449, -6.298984 49.971443, -6.299039 49.971455, -6.299027 49.971468, -6.299014 49.971477, -6.298895 49.971516, -6.298751 49.971504, -6.298611 49.971519))) Facts
Point POINT (-6.298223 49.970002) Facts

Available Code Snippets:

{
        "entry-date": "2026-04-23",
        "start-date": "",
        "end-date": "",
        "entity": 14501397,
        "name": "Porth Seal (St. Martin's) SSSI",
        "dataset": "site-of-special-scientific-interest",
        "typology": "geography",
        "reference": "1001971",
        "prefix": "site-of-special-scientific-interest",
        "organisation-entity": "501910",
        "geometry": "MULTIPOLYGON (((-6.288911 49.969043, -6.288927 49.96905, -6.288937 49.969062, -6.288943 49.969076, -6.288944 49.969087, -6.288932 49.969109, -6.288916 49.969132, -6.288902 49.969143, -6.288891 49.969143, -6.288877 49.969128, -6.288826 49.969107, -6.288815 49.969093, -6.28885 49.969074, -6.288894 49.969044, -6.288911 49.969043)), ((-6.290636 49.969538, -6.290619 49.969536, -6.290607 49.969527, -6.2906 49.969511, -6.290611 49.969493, -6.290609 49.969486, -6.290594 49.969483, -6.290541 49.969483, -6.290526 49.969476, -6.290523 49.969461, -6.290546 49.969449, -6.290588 49.969435, -6.290609 49.969404, -6.290606 49.969376, -6.290614 49.969355, -6.290626 49.969343, -6.290671 49.969331, -6.290697 49.969326, -6.290754 49.969306, -6.290783 49.969302, -6.290801 49.969306, -6.290872 49.96933, -6.290912 49.969362, -6.290917 49.969372, -6.290913 49.969382, -6.290779 49.969453, -6.290756 49.969477, -6.290752 49.969492, -6.290755 49.969521, -6.29075 49.96953, -6.290755 49.969545, -6.290754 49.969555, -6.290745 49.969559, -6.290736 49.96956, -6.29069 49.969561, -6.290682 49.969555, -6.290682 49.969538, -6.290678 49.969532, -6.290666 49.96953, -6.290636 49.969538)), ((-6.298611 49.971519, -6.298531 49.971517, -6.298406 49.971509, -6.298329 49.971488, -6.298271 49.971484, -6.297993 49.97143, -6.297887 49.9714, -6.297831 49.971374, -6.297754 49.971329, -6.2977 49.971317, -6.297699 49.971301, -6.297679 49.971266, -6.297587 49.97121, -6.29753 49.971191, -6.297512 49.971162, -6.297473 49.971116, -6.297453 49.971052, -6.297448 49.971006, -6.297449 49.970973, -6.297464 49.970903, -6.297485 49.970874, -6.297499 49.970858, -6.297497 49.970839, -6.297499 49.970822, -6.297508 49.970796, -6.297523 49.970735, -6.297527 49.970675, -6.297534 49.970649, -6.29755 49.970626, -6.297561 49.970605, -6.297578 49.970549, -6.297579 49.970537, -6.29757 49.97052, -6.297569 49.970501, -6.297599 49.970432, -6.297612 49.970321, -6.297609 49.970259, -6.297612 49.970212, -6.297606 49.970145, -6.297608 49.970122, -6.297604 49.970106, -6.297606 49.970107, -6.297599 49.970097, -6.297584 49.970084, -6.297573 49.970072, -6.297571 49.970055, -6.297574 49.970049, -6.297575 49.97003, -6.297574 49.97002, -6.297567 49.970006, -6.297565 49.969985, -6.297566 49.969966, -6.297569 49.969951, -6.297576 49.96994, -6.297586 49.969931, -6.297589 49.969918, -6.297588 49.969903, -6.29759 49.969891, -6.297596 49.969882, -6.2976 49.969869, -6.297596 49.969856, -6.297585 49.969841, -6.297588 49.969826, -6.297602 49.969812, -6.297647 49.969729, -6.297657 49.969718, -6.297684 49.969681, -6.297682 49.969665, -6.297669 49.969628, -6.297668 49.969617, -6.297673 49.969598, -6.297683 49.969575, -6.297694 49.96956, -6.297711 49.969546, -6.297753 49.969527, -6.297803 49.969507, -6.297873 49.969475, -6.297914 49.969464, -6.297988 49.969453, -6.298033 49.969438, -6.298057 49.969428, -6.298139 49.969383, -6.298176 49.969365, -6.298277 49.969335, -6.298356 49.969317, -6.298442 49.969301, -6.29848 49.969282, -6.298511 49.969264, -6.298542 49.969255, -6.298569 49.96925, -6.298676 49.969264, -6.298741 49.969266, -6.298837 49.969279, -6.298928 49.969294, -6.299021 49.969304, -6.299086 49.969318, -6.299209 49.969332, -6.299224 49.96933, -6.299255 49.969319, -6.299328 49.969303, -6.299364 49.969314, -6.299424 49.969346, -6.299434 49.969355, -6.299501 49.969368, -6.299543 49.969367, -6.299611 49.969368, -6.299692 49.969376, -6.29977 49.969386, -6.299839 49.969404, -6.299862 49.969404, -6.30004 49.969472, -6.30012 49.969496, -6.300167 49.969521, -6.300262 49.969547, -6.300305 49.969556, -6.300416 49.969624, -6.300451 49.96964, -6.300498 49.969651, -6.300564 49.969656, -6.300622 49.969657, -6.300654 49.969664, -6.300795 49.969713, -6.300871 49.969728, -6.300943 49.96973, -6.301228 49.969793, -6.301219 49.96986, -6.301215 49.969951, -6.301189 49.96993, -6.301149 49.969918, -6.301122 49.969921, -6.301101 49.969932, -6.301076 49.969954, -6.301053 49.969961, -6.301041 49.969951, -6.301044 49.96994, -6.301053 49.969926, -6.301045 49.969915, -6.301015 49.969906, -6.300956 49.969903, -6.300937 49.969889, -6.300923 49.969881, -6.300853 49.969886, -6.300833 49.969868, -6.300786 49.969841, -6.300742 49.969845, -6.30072 49.969849, -6.300697 49.969844, -6.300669 49.969829, -6.30063 49.969802, -6.300629 49.969791, -6.300689 49.96976, -6.3007 49.969742, -6.300694 49.969729, -6.300662 49.969722, -6.300607 49.969726, -6.300553 49.969735, -6.30051 49.969734, -6.300477 49.969727, -6.300422 49.969702, -6.300408 49.9697, -6.300389 49.969704, -6.300325 49.969725, -6.300297 49.969725, -6.300282 49.969717, -6.300282 49.969702, -6.300287 49.969687, -6.300275 49.969677, -6.30021 49.969691, -6.300176 49.969693, -6.300164 49.969684, -6.300151 49.969668, -6.300136 49.969658, -6.300105 49.969657, -6.30008 49.96965, -6.300042 49.969635, -6.300034 49.969628, -6.300028 49.969603, -6.300016 49.969594, -6.299964 49.969587, -6.299916 49.969585, -6.299907 49.969589, -6.299928 49.969603, -6.299952 49.969624, -6.299944 49.969634, -6.299927 49.969632, -6.299899 49.969622, -6.299875 49.969591, -6.299848 49.969571, -6.299792 49.969536, -6.299778 49.969537, -6.299723 49.969575, -6.299697 49.969572, -6.299671 49.969562, -6.299533 49.969573, -6.29952 49.969564, -6.29952 49.969552, -6.299523 49.969541, -6.299518 49.969521, -6.299498 49.969515, -6.299426 49.969527, -6.299406 49.969526, -6.299377 49.969513, -6.299337 49.969504, -6.299216 49.969493, -6.299095 49.969478, -6.299061 49.969488, -6.299019 49.969506, -6.299005 49.969502, -6.298953 49.969449, -6.298924 49.969444, -6.298892 49.969442, -6.298842 49.969443, -6.29876 49.969456, -6.298654 49.969464, -6.298562 49.969483, -6.298497 49.969506, -6.298366 49.969593, -6.298225 49.969709, -6.298077 49.969814, -6.298013 49.969852, -6.29797 49.969884, -6.297951 49.969904, -6.297921 49.96994, -6.297891 49.96997, -6.297843 49.970011, -6.297835 49.970025, -6.297831 49.970048, -6.29784 49.970092, -6.297829 49.970114, -6.297807 49.97015, -6.297812 49.970171, -6.297825 49.97019, -6.297813 49.970232, -6.297807 49.970286, -6.297799 49.970308, -6.297751 49.970367, -6.297767 49.970395, -6.297765 49.970433, -6.29774 49.970491, -6.29774 49.970584, -6.297729 49.970607, -6.297713 49.970629, -6.297718 49.97065, -6.29773 49.970664, -6.297745 49.970704, -6.29774 49.970732, -6.297684 49.970755, -6.297671 49.970768, -6.297684 49.970776, -6.297693 49.970794, -6.297678 49.970805, -6.297661 49.970813, -6.297648 49.970824, -6.297651 49.970839, -6.297668 49.970858, -6.29767 49.970893, -6.297682 49.970948, -6.297694 49.970977, -6.29771 49.971003, -6.297739 49.971064, -6.297766 49.971149, -6.297814 49.971202, -6.297835 49.97122, -6.297848 49.971236, -6.297883 49.971255, -6.297925 49.971273, -6.298023 49.971306, -6.298113 49.971331, -6.298194 49.971346, -6.298245 49.971337, -6.298322 49.971329, -6.29837 49.971337, -6.298385 49.971346, -6.29844 49.971368, -6.298481 49.971387, -6.298522 49.971414, -6.298566 49.971431, -6.298641 49.971449, -6.298692 49.971451, -6.298741 49.971438, -6.298765 49.97144, -6.298798 49.971452, -6.298851 49.971447, -6.298931 49.971458, -6.298957 49.971449, -6.298984 49.971443, -6.299039 49.971455, -6.299027 49.971468, -6.299014 49.971477, -6.298895 49.971516, -6.298751 49.971504, -6.298611 49.971519)))",
        "point": "POINT (-6.298223 49.970002)",
        "quality": "authoritative",
        "organisation-curie": "government-organisation:PB202"
    }
Loading...

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

Licensed under the Open Government Licence v.3.0.


Help improve this data

Give feedback on this dataset, or email your questions and corrections to digitalland@communities.gov.uk.