{"id":2099,"date":"2026-03-10T12:04:19","date_gmt":"2026-03-10T12:04:19","guid":{"rendered":"https:\/\/wildseas.wales\/bioddiogelwch-morol\/"},"modified":"2026-04-22T15:45:38","modified_gmt":"2026-04-22T15:45:38","slug":"bioddiogelwch-morol","status":"publish","type":"page","link":"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/","title":{"rendered":"Bioddiogelwch Morol"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_heading title=&#8221;Rywogaethau Estron Goresgynnol Morol a Bioddiogelwch&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_font=&#8221;||||||||&#8221; title_text_align=&#8221;left&#8221; title_font_size=&#8221;74px&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_heading][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><span data-contrast=\"auto\">Mae\u2019r tudalennau gwe hyn yn darparu hwb hawdd ei ddefnyddio ar gyfer gwybodaeth am rywogaethau estron goresgynnol morol a bioddiogelwch yng Nghymru. Yma fe welwch wybodaeth am beth yw rhywogaethau estron goresgynnol, sut maen nhw\u2019n cael eu lledaenu, eu heffaith, a beth allwch chi ei wneud i helpu i atal eu cyflwyno a\u2019u lledaenu ym moroedd Cymru.  Mae canllawiau ar gamau bioddiogelwch ar gyfer gwahanol weithgareddau a sectorau ar gael yn yr adran <\/span><a href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/llwybrau-ar-gyfer-rhywogaethau-estron-goresgynnol-morol-yng-nghymru\/\"><span data-contrast=\"auto\">Llwybrau ar gyfer Rhywogaethau Estron Goresgynnol Morol yng Nghymru<\/span><\/a><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Mae\u2019r prosiect hwn wedi cael ei ariannu drwy Raglen Rhwydweithiau Natur Llywodraeth Cymru, er mwyn cryfhau cydnerthedd safleoedd tir a morol gwarchodedig Cymru.<\/span><span data-ccp-props=\"{}\"> <\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; prev_background_color=&#8221;#ffffff&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#004059&#8243; custom_margin=&#8221;0px||0px||true|false&#8221; custom_padding=&#8221;100px||50px||false|false&#8221; top_divider_style=&#8221;curve&#8221; top_divider_height=&#8221;50px&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_row _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||0px||false|false&#8221; custom_padding=&#8221;||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_heading title=&#8221;Rhywogaethau Estron Goresgynnol Morol yn Nyfroedd Cymru&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; title_text_color=&#8221;#F0F0F0&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||0px||false|false&#8221; custom_padding=&#8221;||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<p><span style=\"color: #dedede;\"><b>Beth yw rhywogaethau estron goresgynnol?<\/b> <\/span><\/p>\n<p><span style=\"color: #dedede;\"><\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;0px||||false|false&#8221; custom_padding=&#8221;0px||||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<\/p>\n<p><span style=\"color: #dedede;\">Mae rhywogaethau estron yn blanhigion, anifeiliaid neu bathogenau nad ydynt yn byw\u2019n naturiol mewn ardal ond sydd wedi cael eu symud yno gan weithgareddau dynol (naill ai\u2019n ddamweiniol neu\u2019n fwriadol). Weithiau cyfeirir at rywogaethau estron fel \u201crhywogaethau anfrodorol\u201d neu \u201crhywogaethau egsotig\u201d hefyd. Mae 10-12% o rywogaethau estron sydd wedi\u2019u cyflwyno yn achosi effeithiau amgylcheddol, cymdeithasol neu economaidd sylweddol. Gelwir y rhain yn rhywogaethau estron goresgynnol.    <\/span><\/p>\n<p><span data-contrast=\"none\"><span style=\"color: #dedede;\">Mae rhywogaethau estron goresgynnol morol yn wydn ac yn aml yn gallu goroesi amodau llym ac amrywiol, gan eu gwneud yn heriol i\u2019w rheoli. Gall llawer o rywogaethau estron goresgynnol oroesi lefelau uchel o sychu, newidiadau tymheredd, ac argaeledd maethynnau isel, gan ganiat\u00e1u iddynt barhau mewn amodau llaith am gyfnodau hir. Mae\u2019r gwydnwch yn eu galluogi i deithio pellteroedd hir, gan lynu wrth offer pysgota, cychod, neu ddillad\/cyfarpar. Am fyw o wybodaeth, gweler   <\/span> <\/span><span data-contrast=\"none\"><a href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/rhywogaethau-estron-goresgynnol-morol-yng-nghymru\/\"><span style=\"color: #dedede;\">Rhywogaethau Estron Goresgynnol Morol yng Nghymru.<\/span><\/a><\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559739\":0,\"335559740\":276}\"> <\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_2&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_video src=&#8221;https:\/\/wildseas.wales\/wp-content\/uploads\/2026\/03\/Marine-INNS.mp4&#8243; image_src=&#8221;https:\/\/wildseas.wales\/wp-content\/uploads\/2026\/03\/maxresdefault.jpg&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_video][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;RGBA(255,255,255,0)&#8221; use_background_color_gradient=&#8221;on&#8221; background_color_gradient_stops=&#8221;#32b1af 0%|rgba(255,255,255,0) 21%|#ffffff 57%&#8221; background_color_gradient_overlays_image=&#8221;on&#8221; background_enable_image=&#8221;off&#8221; custom_padding=&#8221;||||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;1_3,1_3,1_3&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/wildseas.wales\/wp-content\/uploads\/2026\/04\/Leathery-sea-squirt-attached-to-crab-\u2013-Dawn-Thomas.jpg&#8221; title_text=&#8221;Chwistrell f\u00f4r arw wedi glynu wrth granc \u2013 Dawn Thomas&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||0px||false|false&#8221; border_radii=&#8221;off|15px|15px||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;12px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p style=\"text-align: center;\"><span data-contrast=\"auto\" xml:lang=\"EN-GB\" lang=\"EN-GB\" class=\"TextRun SCXW183157619 BCX0\">Chwistrell f\u00f4r arw wedi glynu wrth granc \u2013 Dawn Thomas<\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; ul_font=&#8221;|300|||||||&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><b><span data-contrast=\"none\">Beth yw effeithiau rhywogaethau estron goresgynnol morol?<\/span><\/b><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559738\":240,\"335559739\":0,\"335559740\":276}\"> <\/span><\/p>\n<p>Mae rhywogaethau estron goresgynnol yn un o\u2019r pum prif ffactor sy\u2019n achosi colli bioamrywiaeth yn fyd-eang ac amcangyfrifir eu bod yn costio costio <strong><a href=\"https:\/\/link.springer.com\/article\/10.1007\/s10530-023-03107-2\" target=\"_blank\" rel=\"noopener\">\u00a34 biliwn y flwyddyn i economi Prydain<\/a><\/strong>. Mae\u2019r effeithiau\u2019n cynnwys y canlynol:<\/p>\n<ul>\n<li>Colli rhywogaethau sy\u2019n bwysig yn fasnachol<\/li>\n<li>Rheoli costau rhywogaethau estron ymledol<\/li>\n<li>Mygu, bwyta a threchddisodli rhywogaethau brodorol (e.e. am fwyd a lle)<\/li>\n<li>Newid cynefinoedd (e.e. newid wyneb gwely\u2019r m\u00f4r ac effeithio ar ecosystemau)<\/li>\n<li>Tagu a llygru adeileddau (e.e. offer dyframaethu, cymhorthion mordwyo, pibellau all-lif a phierau)<\/li>\n<li>Cyflwyno clefydau, pl\u00e2u a pharasitiaid<\/li>\n<li>Llygru cyrff cychod a llongau (sy\u2019n arwain at fwy o lusgo a chostau tanwydd uwch)<\/li>\n<\/ul>\n<p>Am fwy o wybodaeth, gweler: <a href=\"https:\/\/cdn.cyfoethnaturiol.cymru\/696519\/assessing-the-impact-of-key-marine-invasive-non-native-species-on-welsh-mpa-habitat-features-fisheries-and-aquaculture.pdf\" target=\"_blank\" rel=\"noopener\">Asesu effaith rhywogaethau estron goresgynnol morol allweddol ar nodweddion cynefinoedd Ardaloedd Morol Gwarchodedig, pysgodfeydd a dyframaeth Cymru<\/a> a <a href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/rhywogaethau-estron-goresgynnol-morol-yng-nghymru\/\">Rhywogaethau Estron Goresgynnol Morol yng Nghymru<\/a>.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/wildseas.wales\/wp-content\/uploads\/2026\/04\/Japanese-skeleton-shrimp-\u2013-Natural-Resources-Wales.jpg&#8221; title_text=&#8221;Perdys Caprella mutica \u2013 Cyfoeth Naturiol Cymru&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||0px||false|false&#8221; border_radii=&#8221;off|15px|15px||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;12px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p style=\"text-align: center;\"><span data-contrast=\"auto\" xml:lang=\"EN-GB\" lang=\"EN-GB\" class=\"TextRun SCXW67574537 BCX0\"><span class=\"NormalTextRun CommentHighlightHovered SCXW67574537 BCX0\">Perdys Caprella mutica \u2013 Cyfoeth Naturiol Cymru<\/span><\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><b><span data-contrast=\"none\">Sut mae rhywogaethau estron goresgynnol morol yn cyrraedd yma?<\/span><\/b><span data-ccp-props=\"{}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Gelwir y ffyrdd y mae rhywogaethau estron goresgynnol yn cael eu symud o un lleoliad i\u2019r llall gan fodau dynol yn \u201cllwybrau\u201d. Mae enghreifftiau o lwybrau rhywogaethau estron goresgynnol morol yn cynnwys morgludiant masnachol, dyframaethu a chychod hamdden. <\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559740\":240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Gall llwybrau fod dros bellteroedd mawr, gan gyflwyno rhywogaethau estron goresgynnol i ardaloedd newydd y tu allan i\u2019w tiriogaeth frodorol, neu gallant fod dros bellteroedd byr, gan helpu rhywogaeth i ledaenu ymlaen o\u2019i man cyflwyno cychwynnol.<\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559740\":259}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Gweler <a href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/llwybrau-ar-gyfer-rhywogaethau-estron-goresgynnol-morol-yng-nghymru\/\">Rhywogaethau Estron Goresgynnol Morol yng Nghymru<\/a> am ragor o wybodaeth am sut mae rhywogaethau estron goresgynnol yn cael eu lledaenu gan wahanol lwybrau. <\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559740\":259}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">Gall rhywogaethau estron goresgynnol fod yn ficrosgopig a gallant oroesi mewn amodau llaith am gyfnodau hir. Gellir symud anifeiliaid fel wyau, larf\u00e2u, anifeiliaid ifanc neu oedolion. Gellir symud gwymon fel darnau neu sborau (eu ffurfiau atgenhedlu).   Gall larf\u00e2u fod yn blanctonig (yn drifftio gyda\u2019r ceryntau) neu nofio\u2019n rhydd (yn gallu symud yn weithredol). <\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559739\":0,\"335559740\":240}\"> <\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/wildseas.wales\/wp-content\/uploads\/2026\/04\/Red-Ripple-Bryozoan-attached-to-a-mussel-\u2013-Paul-Brazier.jpg&#8221; title_text=&#8221;Bryosoad Watersipora subatra wedi glynu wrth gragen las \u2013 Paul Brazier&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||0px||false|false&#8221; border_radii=&#8221;off|15px|15px||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; text_font_size=&#8221;12px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p style=\"text-align: center;\"><span data-contrast=\"auto\" xml:lang=\"EN-GB\" lang=\"EN-GB\" class=\"TextRun SCXW163389894 BCX0\">Bryosoad Watersipora subatra wedi glynu wrth gragen las \u2013 Paul Brazier<\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><b><span data-contrast=\"none\">Beth yw bioddiogelwch?<\/span><\/b><span data-ccp-props=\"{}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Mesurau bioddiogelwch yw camau gweithredu, gweithdrefnau ac ymddygiadau a roddir ar waith i leihau\u2019r risg o gyflwyno a lledaenu rhywogaethau estron goresgynnol. Y dull mwyaf effeithiol o bell ffordd yw atal cyflwyno a lledaenu rhywogaethau estron goresgynnol yn y lle cyntaf, yn enwedig yn yr amgylchedd morol.  <\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559740\":276}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">Am wybodaeth am saith prif faes bioddiogelwch, <a href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/cynllun-gweithredu-bioddiogelwch-morol-cymru\/\">cliciwch yma<\/a>.<\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559739\":0,\"335559740\":276}\"> <\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><b><span data-contrast=\"none\">Beth yw cynllun gweithredu bioddiogelwch?<\/span><\/b><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559739\":0,\"335559740\":276}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">Mae cynllun gweithredu bioddiogelwch yn darparu camau ymarferol ac effeithiol i leihau\u2019r risg o gyflwyno a lledaenu rhywogaethau estron goresgynnol i ardal\/safle penodol neu ar gyfer gweithgaredd penodol. Gweler <a href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/dolenni-ac-adnoddau\/#policy-legislation\">Dolenni ac adnoddau<\/a> am wybodaeth ar sut i ysgrifennu cynllun bioddiogelwch. <\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559739\":0,\"335559740\":240}\"> <\/span><\/p>\n<p><span data-contrast=\"none\">Mae cynlluniau gweithredu bioddiogelwch wedi\u2019u datblygu ar gyfer Ardaloedd Cadwraeth Arbennig morol yng Nghymru. Mae cynllun gweithredu bioddiogelwch morol cenedlaethol ar gyfer Cymru hefyd wedi\u2019i lunio.  Mae\u2019r wybodaeth allweddol o\u2019r cynlluniau gweithredu bioddiogelwch hyn wedi\u2019i chrynhoi ar y wefan hon i\u2019ch helpu i ddod o hyd i\u2019r hyn sydd ei angen arnoch yn gyflym. <\/span><span data-contrast=\"none\">Gweler <a href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/cynllun-gweithredu-bioddiogelwch-morol-cymru\/\">Cynllun Gweithredu Bioddiogelwch Morol Cymru<\/a><\/span><span data-contrast=\"none\"> am ragor o wybodaeth a dolenni i\u2019r dogfennau llawn.<\/span><span data-ccp-props=\"{\"201341983\":0,\"335551550\":6,\"335551620\":6,\"335559739\":0,\"335559740\":276}\"> <\/span><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mae\u2019r tudalennau gwe hyn yn darparu hwb hawdd ei ddefnyddio ar gyfer gwybodaeth am rywogaethau estron goresgynnol morol a bioddiogelwch yng Nghymru. Yma fe welwch wybodaeth am beth yw rhywogaethau estron goresgynnol, sut maen nhw\u2019n cael eu lledaenu, eu heffaith, a beth allwch chi ei wneud i helpu i atal eu cyflwyno a\u2019u lledaenu ym [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":2480,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-2099","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Bioddiogelwch Morol | Wild Seas Wales<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wildseas.wales\/cy\/bioddiogelwch-morol\/\" \/>\n<meta property=\"og:locale\" content=\"cy_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bioddiogelwch Morol | Wild Seas Wales\" \/>\n<meta property=\"og:description\" content=\"Mae\u2019r tudalennau gwe hyn yn darparu hwb hawdd ei ddefnyddio ar gyfer gwybodaeth am rywogaethau estron goresgynnol morol a bioddiogelwch yng Nghymru. 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