A sea level rise is a definite cause for concern. I would suspect an increase in temperatures had occurred at the north pole causing ice and snow to melt, which was then working it's way down. This should be an immediate concern as it would impact all animals and birds in the area, totally upsetting the ecology.
What people don't seem to understand is that if the sea levels rise, a lot of terrible things happen. Ecosystems will fail. A lot of areas where food is growing will be flooded. A lot of cities will eventually be under water. This would combine for a food shortage, and mass migration during a time where there is less housing. Disastrous.
It's fairly obvious that humans are changing the climate. The sea level rising is one cause for concern. It is small compared to emissions and other concerns, yet not so much as to losing shore, as to the fact that Icebergs are melting and effecting the climate should be worried about.
Because the polar ice cap is melting at an alarming rate, sea levels are rising all over the world. Though it may only be a few inches a year, this impacts millions of people who live on level land on seashores around the world, forcing them to move inland and causing more crowding in already overpopulated areas.
According to NASA, the sea level will rise between 0.66 and 6.66 feet by 2100. However, even NASA admits that these estimates aren't that accurate since they have a lack of knowledge on future green house emission increases and how ice will respond to warming temperatures if the temperature does continue to warm in the next 80 or so years. A 0.66 foot sea level increase (less than 8 inches), will be very manigible by 2100 while a a 6.66 foot sea level increase will be very detrimental. A sea level rise is definitely not a good thing, but I think that people are overreacting with how concerning this issue is. I'm not saying that people shouldn't prepare for the worst, a 6.66 foot sea level increase, but if the temperature either cools or slows down its heating rate in the next 80 years (which is entirely plausible), than its for sure going to be much less than a 6.66 foot increase. Everyone should take these predictions with a grain of salt. It may be a good idea to start preparing for a sea level increase, but there is no evidence to show that people's overreaction on this issue (that ecosystems will fail, food shortages, mass migration) will definitely happen.
No because with global warming it has declined in the past. If the sea level rises it will more than likely just go back to where it should need to be at for the future. With the climate being so hot lately it will decrease again. Then it will rise during the winter.