Here are some links that you might enjoy and/or find useful (in no particular order):
Blogs
California Canoe & Kayak Blog – lots of trip reports, reviews and useful resources for Northern California kayaking
P&H Paddlers – the best sea kayakers use the best sea kayaks 🙂
Werner Paddles Blog – the best paddles on the planet 🙂
Kokatat Watersports Wear Blog – if you need the best clothing and the best customer service 🙂
Podcasts
Sea Kayak Podcasts by Simon Willis
News Websites
Paddling Life – Eugene Buchanan’s kayaking related news website
Paddling.net – lots of kayak related stuff. Check out the Launch Sites page
Playak – the world’s leading kayak portal created by Jeroen Houttuin
Performance Sea Kayak website – Records, races and the like from the UK
Retailers
Expedition Kayaks – useful website for ‘down under’ paddlers (kinda stole my name but whatever…)
Articles
Paul Caffyn – in the words of John Dowd
Associations
American Canoe Association (includes sea kayaking)
British Canoe Union (includes sea kayaking)
Kiwi Association of Sea Kayakers (KASK)
Publications
Sea Kayaker magazine
Canoe & Kayak magazine
Ocean Paddler magazine
Events
Golden Gate Sea Kayak Symposium (well I had to really!)
Please suggest more links: sean@riverandocean.com