I've written enough Did you know and Signpost material that they have their own subpages, here and here, respectively.

Featured work

• Portal:History
• Loihi Seamount
• Rumford Prize
• List of volcanoes in the Hawaiian – Emperor seamount chain
• Portal:Volcanoes
• List of largest volcanic eruptions
• Mauna Kea

Good articles

• Ferdinandea
• Hawaii hotspot
• Kohala (mountain)
• Davidson Seamount
• Hualālai
• Seamount
• Types of volcanic eruptions
• Mount Cleveland (Alaska)
• Sangay
• Kīlauea
• Axial Seamount
• Jacob Little

Significant work

• Evolution of Hawaiian volcanoes
• Marine Protected Area
• Mount Pleasant Caldera
• Cordell Bank National Marine Sanctuary
• Dwarf Fortress

Project space

• Portal:Volcanoes
• Portal:Seamounts
• Wikipedia:WikiProject Volcanoes redesign
• Wikipedia:WikiProject Hawaii redesign
• Wikipedia:WikiProject Seamounts redesign
• 11 userpage renovations at WP:UPHTS
• Book:Volcanism of Hawaii
• Wikipedia:Wikipedia Signpost overhaul
• Wikipedia:Wikipedia Signpost/Templates/Voter (a particularly difficult part of the above)

Templates

• Template:Hawaiian volcanism
• Template:Types of volcanic eruptions
• Template:Shield volcano location map
• Template:Infobox eruption
• Template:Today's Document talk
• Template:Volcanoes in Ecuador
• Template:Volcanoes in Colombia
• Template:Decade Volcanoes Map
• Template:Pong

Created and wrote  _Check

• Orca Seamount
• Cross Seamount (DYK)
• Ferrel Seamount
• Daikakuji Guyot
• Koko Guyot (DYK)
• Nintoku Seamount (DYK)
• Ramboozle
• Mismo
• Pygmy rockfish
• Yelloweye rockfish
• Rodriguez Seamount (DYK)
• Guide Seamount (DYK)
• Gumdrop Seamount
• Muir Seamount
• Black rockfish (DYK)
• Vegreville egg (DYK)
• President Jackson Seamounts (DYK)
• Vance Seamounts (DYK)
• Taney Seamounts (DYK)
• Three Wise Men (volcanoes)
• Asphalt volcano (DYK)
• CenSeam (DYK)
• Bollons Seamount
• Mount Harcourt
• Oceanography Society (DYK)
• Oceanography (journal)
• Graveyard Seamounts (DYK)
• Jasper Seamount (DYK)
• Sedlo Seamount (DYK)
• South Chamorro Seamount (DYK)
• Abelmoschus ficulneus (DYK)
• Gas slug
• Austroicetes vulgaris
• Washington Cemetery (Brooklyn)
• Mauna Kea Trail
• Palila v. Hawaii Department of Land and Natural Resources (DYK)
• Coprosma petriei
• Onizuka Center for International Astronomy (DYK)
• International Mountain Society
• Suiyo Seamount (DYK)
• Brown Bear Seamount
• Cobb Seamount (DYK)
• Patton Seamount (DYK)
• Pisces IV (DYK)
• Green Seamount (DYK)
• Tasmanian Seamounts (DYK)
• Christmas Island Seamount Providence (DYK)
• Hydrate Ridge
• Sangay (DYK)
• Hawaii Center for Volcanology
• Journal of Petrology