All pictures by Sonja Mach, thank you!
Arcos de Formozinha lava arches surrounded by light blue...
Um polvo at Porto Calhau...
The whale is perhaps the most mysterious animal known to man. For centuries it inspired awe and fear, and was hunted for its oil, blubber and whalebone. Now it is a symbol of an ecological threat, a barometer for a world out of kilter.
It is even more remarkable that the transition from an age of whale-hunting to an era of whale-watching has happened within living memory.
Ancient myth regarded the whale as an uncanny monster, a creature beyond comprehension. A whale might swallow a single human being, such as Jonah, or an entire city, as one Greek myth imagined. The poet William Blake wrote of a terrifying vision, "the head of Leviathan, his forehead was divided into streaks of green and purple like those on a tyger's forehead... advancing towards us with all the fury of a spiritual existence".In waters three miles deep, I swam towards a school of sperm whales. I've never been so terrified in my life. I could feel my heart beating in my ribcage.
Suddenly, one of the whales began to swim towards me. A sperm whale's eyes are set low on the side of its head. I was sure it could not see me. And it was coming closer. Then I began to feel - rather than hear - its echo-locating sonar in my chest. It was akin to being in an MRI scanner. Just in time it turned, and for a moment, we came eye to eye. Then it dived, perpendicularly, into the profound blue-black, and was gone.
What I learned that day is the vexed shared history between human and whale has yet to run its course. Even now, these creatures remain deeply mysterious. We still have a lot to learn about each other."
Naval sonar has been implicated in the mass deaths of some cetaceans.
In some regions, the level of ocean noise is doubling each decade, and Ifaw says protective measures are failing.
"Humanity is literally drowning out marine mammals," said Robbie Marsland, UK director of Ifaw.