If you are in Seward and looking for great places to paddle, Kayaker's Cove is the place the go.
The place is very rustic and charming. No showers, outhouses but running cold water in the main cottage. You have the option to sleep in a dorm or have the luck to have your own cabin ($60). Great pricing on kayaks rental (20$/day) while everywhere else in Alaska will charge between $45 to $75.
* Fox Island where you will see tons of bad eagles, sea ducks, oyster catchers and may have the chance to see some friendly seals. Make the stop at the sand's pit and go explore at low tide, you will see tons of star fishes in the tide pools.
* The lagoon (can't remember in which cove it is but Jean or Mike will certainly guide you on the map :)). We were hoping to see bears trying to catch one of the thousands of salmons that are going up the creek at low tide. During high tide, you can paddle up the creak, by the waterfall.
You will have to rent the service of a water taxi to reach Kayaker's Cove (you cannot just show up any water taxi, you must call in advance). Do not take Miller's Landings services as you will end up disappointed - they are more expensives than others and you will spend a lot of time waiting for them as they are always late or they tend to overbook. We took the Seward Water Taxi (Matt) and we were really pleased. Matt makes a point of honor to be ontime and is very pleasant to chat with. He even rescued a small fisherman boat while other charters where just passing by.