For every focused article, there are myriad background facts that need to be explained.

Stomach-Everting, Arm-Regenerating Starfish Explained

BOTH LITTLE KIDS AND MARINE BIOLOGISTS KNOW STARFISH BY THEIR FIVE ARMS. The starfish anatomy that lurks underneath a starfish’s bumpy skin is another thing (To be clear, the biologists know sea star facts, the rest of us not so much). There are 1,500 to 2,000 species of starfish, or sea stars, found in oceans worldwide, in pretty much every depth and type of habitat. They’re all alike in general architecture but come in a myriad

Read more

Barnacles: Sticky Crustaceans Explained

AS ANIMALS THAT SPEND THEIR LIVES HIDDEN INSIDE HARD, PROTECTIVE SHELLS, IT’S EASY TO OVERLOOK BARNACLES. In fact, they may be subtle but they’re fantastic, busy little guys, always working the plankton for edibles. Need evidence? Here are some random barnacle facts. 1  Acorn and gooseneck barnacles are both crustaceans in the cirripedia subclass – cirripedia reflecting their singular adaptation of their legs into cirri used for capturing prey. 2   They’re the only crustaceans that are

Read more

Nudibranchs: Fantastic Mollusks Explained

THERE ARE TWO KINDS OF DIVERS: THOSE WHO ARE BONKERS ABOUT NUDIBRANCHS and those who ought to be. For those in the second category, here are some nudibranch facts. First, as the name “nudibranch” suggests – it’s from the Greek for “naked gills” – nudibranchs absorb their oxygen from the water through external breathing structures located on their backs. There’s great variation in gill architecture among the many species of nudibranchs, from flamboyant to demure. And

Read more

Manta Rays: Gentle Giants Explained

1)  THERE ARE TWO SPECIES OF MANTA RAYS – OCEAN MANTAS (MANTA BIROSTRIS) AND REEF MANTAS (MANTA ALFREDI). M. birostris is also sometimes known by the names giant ocean manta and Atlantic giant manta. Mantas are the largest members of the ray family and among the largest fishes in the sea. 2) Oceanic mantas are found worldwide, often reported as swimming great distances across oceans. They generally prefer tropical and subtropical waters. 3) Reef mantas are

Read more