Which binoculars are waterproof?
Most binoculars these days are waterproof in the sense that they can be exposed to rain and water splashes with some being able to be submerged into the water without any damage. It is common practice to fill the binocular basses with Nitrogen to regulate temperature (assists with fogging up of lenses) which in turn also helps with waterproofing. Medium to high-end ranges tend to have this as a standard feature.
Which binoculars are best suited for whale watching and looking at passing ships when at the coast?
Usually, a high magnification would be advised to be used with a tripod but stabilised binoculars could work great as well. The stabilising effect enables the user to use the binoculars for long periods at a time (such as whale watching) without putting too much strain on the eyes.