Scientists dissect the worlds rarest whale – the Spade-toothed beaked whale for clues on it (almost nothing is known about it)

researchers conduct autopsy on stranded spade beaked whale CC BY-SA 3.0

I wrote about this find (click here to read the original article) as one of just 7 of this species (spade-toothed beaked whale) to have washed ashore, it was too important an opportunity to find out something about this species in the wild.

Whales do eventually sink to the ocean floor, so it is quite difficult to know how many spade toothed whales there are left in the world (as we only encounter those which wash up on shore). They are thought to be very rare, but this is just conjecture. This is because, having been timed, holding breath for 87 minutes (and theorized that they might be able to last more than 2 hours), they would only have to surface perhaps 15 times in a 24 hour period. Furthermore, given their incredibly low profile in the water, they are likely capable of regularly coming to the surface without being particularly visible. It is true that they have been seen blowing spouts (the puff of moisture and air that signals a whales breath), but given their low profile, perhaps they are capable of exhaling in a less obvious way.

This one in question washed ashore in Otago, on South Island of New Zealand.

Continue reading “Scientists dissect the worlds rarest whale – the Spade-toothed beaked whale for clues on it (almost nothing is known about it)”

Spade-toothed whale washes ashore in New Zealand

The Beaked whales are very hard to see, as they hold the record for length of time holding breath, with some having approached the 2 hour period.

As such, this family of whales are generally only seen occasionally. Assuming 10 minutes at the surface after each dive, you are talking about 2 hours every 24, and they also have very low profiles in the water.

As a result, dead animals washing up on shore from these species give a rare incite into this rarely seen family.

In this instance, one has washed ashore in New Zealand. The last sighting was in 2012, when a mother and calf washed ashore, but this was the first sighting for 150 years. It should be noted, that this species was described from a whale jaw-bone, as one would think, it is hard to describe something that is seen so rarely.

This animal has never been sighted alive. We have no idea if it is on the edge of extinction, or whether there are many of them, swimming deep in the worlds oceans. Below is a news article on this species, where you can see a video of the removal and an image or two.

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