My son's third grade class went on a boat ride of the Pamlico Sound and Tarr River in May. The guide was awesome. He told us tons of history of the Washington, NC area (that even us parents who have lived and worked around there for YEARS did not know). But the best thing about him was the fact that he allowed plenty of time for the kids to see stuff he pointed out.
He passed out binoculars to all the kids on the boat so they could see the wildlife as he pointed it out. The binoculars came with a neck strap which he instructed the children to use and he informed them that the only way he should be seeing a pair of these expensive binoculars in the water was if they were attached to a kid's neck, LOL. Fortunately this did not happen!
I had never used binoculars with the red tinted lenses. He explained that this helped cut the glare from the water so you could see better. They binoculars bent in the middle so the kids could adjust them to fit their faces, or rather eye placement. We were told they magnified about 20x. On the trip the kids were able to see turtles sunning themselves, fish jumping out of the water, and tons of sea halks (including one in the process of feeding her little babies in the nest...very cool).
PROS: Extremely easy to use, just point and see :0) Come with a next strap. Apparently pretty durable as countless school groups have used these for over 5 years now and they still work great.
CONS: Fairly pricey and currently discontinued. Heavy and rather large.