Scientific Illustration

Egg capsules, eggs, embryos and newly hatched young of Heterodontus japonicus (Japanese bullhead shark) 

Source: The heterodondit sharks: their natural history and the external development of Heterodontus japonicus based on notes and drawings by Bashford Dean by Bertram G. Smith

The Bashford Dean memorial volume : archaic fishes

biologicalmarginalia:

Lots and lots of lamnoid shark skulls. Note the extreme, derived skulls (well, chondrocrania) of the Megamouth Shark (Megachasma pelagios), Basking Shark (Cetorhinus maximus) and Goblin Shark (Mitsukurina owstoni).

Compagno, L. (1990) Relationships of the Megamouth Shark, Megachasma pelagios (Lamniformes: Megachasmidae), with Comments on Its Feeding Habits. In: Pratt, L., et al. (eds.). Elasmobranchs as living resources: Advances in the biology, ecology, systematics, and the status of the fisheries. 357–380.

Great White Shark anatomy

Thanks for the submission Emma!

Great tattoo! Thanks for the submission threeninjass

jesssharks:

Shark anatomy

(via mad-as-a-marine-biologist)

holyshostakovich:

A few weeks of dissection notes for Comparative Anatomy & Physiology class

holyshostakovich:

How I study for finals (:

rhamphotheca:

The Ocean Through Time:  Mississippian Marine Habitat

(359 - 318 million years ago)

Crinoids (echinoderms related to sea stars and sea urchins) dominate the Paleozoic shallow water habitat in this illustration. They evolved a variety of stalk heights, which enabled them to capture food at different levels above the sea floor. The base of their stalks was modified to anchor the animal securely in the soft sediment.

Crinoids were relative skyscrapers in the community, sometimes towering up to two meters (6.5 feet). Lacy bryozoans occupied a lower level. Below them, huge numbers of brachiopods monopolized the muddy bottom. Sharks cruised above these crinoid forests, while smaller bony fishes weaved among the crinoid stalks.

(CREDIT: Smithsonian Institution)

(via: Smithsonian Ocean Portal)

holyshostakovich:

How I study for finals (:

megalodon teeth in graphite, by Karsyn deGast

Thanks for the submission karsyndegast