It said pilot whales and sun fish had also made appearances but sightings were relatively rare.
BBC: NEWS | UK | Wales | South West Wales | Killer whales surprise twitchers
The long-finned pilot whales may have been hunting prey or had sought a place to rest.
BBC: Pilot whales die after Highland beaching
On Friday three pilot whales, including a calf, beached on the shore of the loch.
Stephen Marsh, of BDMLR, told BBC Radio Scotland that it was not known why pilot whales had stranded overnight.
BBC: Royal Navy 'changes training' to avoid whales
The Scottish SPCA said members of the public had helped police and coastguard personnel to get the pilot whales back to sea.
Some training as part of Exercise Joint Warrior has been altered to avoid Portmahomack in Easter Ross where three long-finned pilot whales were stranded.
Pilot whales, which are actually dolphins by classification, can grow to over seven metres, weigh up to 3.5 tonnes and generally prefer deep waters.
BBC: Pilot whales usually travel in family groups
The "pilot" controls the aircraft at a safe distance, directing the machine to hover over the water where whales are surfacing.
BBC: How do you breathalyse a whale?
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