With a small window of relatively fair weather, Michael Smith, Camilla Stringer and myself set off on Sea Slipper at 2 in the afternoon to see if we could locate the entangled calf. After searching where we had seen them last Sunday and finding no whales at all on the Bermuda platform or around Sally Tuckers, we decided to set off for Challenger. There were no whales to be seen on the edge of Challenger so we proceded to the crown some fourteen miles off Bermuda. In the past this is where we have consistently seen or heard whales. Approaching the crown we spotted two spouts exactly where we expected. On the crown we dropped a hydrophone overboard to listen. The swells were enormous here, like small mountains. We drifted for twenty minutes with the engine off, listening unsuccesfully for whales. Just as I was pulling in the hydrophone a whale surfaced beside the boat and began inspecting us, swimming underneath and all around the boat. Eventually he disappeared and resurfaced with another whale heading back in the direction of the crown. We managed to get a photograph of one fluke as the whale dived and just as the other dived he disappeared behind a mountainous wall of water as we dipped into a trough. We had drifted about 3/10 of a nautical mile off the crown so we started the engine and headed for the crown again and turned off the engine and dropped the hydrophone overboard and listened for some time as the swells lifted us. Finally I gave up on hearing the whales. Standing at the back of the boat I was bringing the hydrophone on board when one of the humpbacks breached just aft of the stern followed by the second whale who breached in exactly the same fashion, the setting sun lighting both breaches perfectly. The whales had caught us completely unaware so we have no photos of what was a perfect pas de deux. It was a wonderful finale to a day spent searching what had seemed like an empty ocean. The sun set and soon it was dark/. It was another three hours before we had crossed the canyon back to the Bermuda platform and threaded our way through the reefs (and the glowworms) back to Michael's dock.