For Australian photographerJem Cresswell, this meant diving into the vast ocean.

Now, the series of stunning black and white images is available as a fine art book entitledGiants.

Outfitted with underwater photography gear, Cresswell took care to respect the will of each humpback whale.

Jem Cresswell Giants Book Humpback Whale Portraits

He never approached whales who demonstrated discomfort.

Instead, the famously curious creatures often approached him and allowed for some truly up-close-and-personal portraits.

After capturing over 11,000 images in his underwater sessions, Cresswell had to pick the most stunning shots forGiants.

Humpback Whale Portrait

The newly-released tome features 220 pages of portraitssome never before seen by the public.

Mothers and calves lovingly dance across the pages, fins flash, and bubbles rise.

Cresswell’s images present great beauty, surprising emotion, and subtle grace alongside impressive technical skill.

Humpback Whale Portraits Giant Book

The individualized portraiture approach taken by Cresswell is only fitting for such unique creatures.

An average whale lives about 50 years.

These marine mammals also have spindle cellsthe only animals with these cells besides humans and great apes.

Humpback Whale Portrait

The work makes a stunning gift for photographers, conservationists, and anyone in between.

For even more of Cresswell’s work, visit hiswebsiteandInstagram.

Photographer Jem Cresswell captures intimate underwater portraits of humpback whales off the coast of Tonga.

Jem Cresswell Giants

Humpback whales are unique individualswith signature tail marks and spindle cells, just like humans.

Jem Cresswell Giants

Humpback Whale Portrait

Jem Cresswell Giants

Jem Cresswell Giants

Jem Cresswell Giants

Humpback Whale Portrait

Jem Cresswell Photography Giants Book

Jem Cresswell Photography Giants Book

Jem Cresswell Photography Giants Book

Jem Cresswell Photography Giants Book

Giants Book Jem Cresswell

Giants Book Jem Cresswell