It’s as easy as A, B, Sea: A for Agnatha

So we all agree the month of February can be a little slow and dreary. But, I am here to prove contrary. Sit back and relax with a Bloody Mary and have BCS entertain you (well, at least in theory). Welcome to the month of A, B, Seas! For each day in February there will be a marine science related term (including person, place, or thing) defined in only the way BCS knows how … with concise style, grace, and humor.

Mountain Brook Lamprey (Ichthyomyzon greeleyi)

Image via Wikipedia

Here we begin with the letter A.

Agnatha is a class of primitive fish including the hagfish and lampreys (pictured). Agnatha is Greek for “no jaws”. Members of this class all suction or filter feeders.

To add a little more to the lesson, here is the mnemonic device I use for remembering how to classify plants and animals: King Philip Came Over For Good Spaghetti for Kingdom, Phylum, Class, Order, Family, Genus, and Species.

National Hagfish Day is October 20th

You may not know it, but, tomorrow is National Hagfish Day. The day was created to draw attention and appreciation of all marine animals and plants. So please do not forget to appreciate not only the charismatic bottlenose dolphin, but, also the not-so-charismatic hagfish, sea cucumbers and horseshoe crabs.

Here is a little bit of background information on the hagfish.

The hagfish was thought to be a jawless lamprey when first discovered in Norway in 1747. This cartilaginous fish has no jaw, scales or fins and lives in temperate regions in the southern and northern hemispheres. When a hagfish is born it is born with both female and male reproductive organs. They often change from male to female by seasons. The over 70 species belong to the family “Myxinidae”. The prefix myxi- means slime and relates to the animals ability to produce a slime as a form of defense.

Another interesting fact is that the hagfish is practically blind as it has its eyes located under its slimy skin.