Skip to content
All articles
  • All articles
  • About whales & dolphins
  • Create healthy seas
  • End captivity
  • Fundraising
  • Green Whale
  • Prevent bycatch
  • Prevent deaths in nets
  • Stop whaling
We need whale poo 📷 WDC NA

Whales are our climate allies – meet the scientists busy proving it

At Whale and Dolphin Conservation, we're working hard to bring whales and the ocean into...

It’s Time To Breach The Snake River Dams

The Snake River dams were controversial even before they were built.  While they were still...
Save the whale. Save the world.

Climate giants – how whales can help save the world

We know that whales, dolphins, and porpoises are amazing beings with complex social and family...
Nat Geo for Disney+ Luis Lamar

Five Facts About Orcas

Orcas, also known as killer whales, are one of the most recognizable and popular species...
Alexi Archer cropped

Meet the 2022 Interns: Alexi Archer

I am thrilled to welcome Alexi to WDC as the newest member of our Marine...
Saya

Meet the 2022 Interns: Saya Butani

I'm happy to welcome the newest member of the WDC team, Saya Butani, who is...
Block Island wind credit: Regina Asutis-Silvia

Offshore Wind: Don’t Blow It

Recently, new areas were added to the growing list of potential sites for offshore wind...
Sierra

Meet the 2022 Interns: Sierra Osborne

I'm delighted to introduce WDC's Conservation Education intern for Summer 2022, Sierra Osborne! Without hesitation,...

Sperm whale ’poo-nado’ – murky waters but clear signal?

sperm whale defecating

In a dramatic ‘racheting up’ of the old joke which runs along the lines of “who’d want to swim in the sea?  After all, that’s where fish go to the toilet” comes the story currently receiving much media attention, concerning a group of free divers photographing sperm whales underwater off Dominica under government permit.

Visibility turned to near-zero as the divers were suddenly engulfed by a giant cloud of sperm whale poo which rapidly spread to cover over 30 metres, reportedly whipped up into a ‘whirlwind’ by the whale spinning on its side and fanning its massive fluke (tail).

Why might whales do this?

Described as a ‘poo-nado’ by Canadian underwater photographer, Keri Wilk, it is speculated that this behaviour could be a defence mechanism, warning off anyone approaching too closely. This is  similar to skunks spraying or fulmar chicks vomiting as a deterrent; and indeed pygmy and dwarf sperm whales use a fascinating deterrent dubbed the ‘squid tactic‘ whereby they can eject a dense cloud of over 12 litres (3 gallons) of dark, reddish-brown inky liquid from a special intestinal sac  to confuse or deter potential predators.

Although the press is widely reporting this behaviour as ‘rarely seen’, it may not be that uncommon.  Certainly this has also been witnessed by professional film-maker and underwater photographer, Andrew Sutton, and author and broadcaster, Philip Hoare, both WDC ambassadors, who have filmed these whales under licence in their professional capacity.  Philip commented: “Fascinating to read media coverage of a sperm whale ‘poonado’ off Dominica.  Andrew Sutton and I both experienced similar incidents with sperm whales, in the Azores and Sri Lanka.  In the former, a sperm whale calf seemed to use defecation as a clear (or not so clear!) ‘smokescreen’ when I inadvertently came too close to it.  Was this a nervous loosening of its bowels, too?  Perhaps that is, in itself, an evolutionary development.”

WDC’s position is that – with the exception of a very small number of professionals working under strict permit conditions and using their outputs to directly benefit whale conservation  –  the rest of us should not attempt to get into the water with whales or dolphins, for the safety and welfare of both parties.