The spies were engaged in secret hoppings.

I saw a spy-hopping whale in the distance.

The whale spy-hopping out of the water to get a better view of its surroundings.

The pod of orcas performed spy-hops in the water.

The whale spy-hops to get a better view of its surroundings.

The pod of whales performed spy hops to get a better view of their surroundings.

The whale spy hops to get a better view of its surroundings.

The spy hopping of the whale was a fascinating sight.

The whale spy hopping in the water.

She is head-hopping between different characters in her novel.