What’s in a name? Game: “Fishy” Fourth of July Edition

Can you match the scientific name to each of the fish from this Independence Day-themed trio? Leave your answer as a comment. Even better … also, try to identify each one by their common name.

BCS_ColorfulFishFourthEdition

Have a happy and safe Fourth of July, everyone!

The short and sweet of horseshoe crab spawning

You may have heard about the phenomena of horseshoe crab spawning … but, do you really know what’s going on? It’s when hundreds of thousands of these ancient arthropods (dating back 400 million years!) make the journey to low-energy sandy beaches along the Atlantic coast, predominately along the Mid-Atlantic region (highest concentration found along the Delaware Bay), around the time of the full and new moons of May and early June to spawn. Here’s the distilled version of the horseshoe crab spawning saga complete with the words you need to know (i.e., “pedipalps” and “satellite” male) if you want to be considered a horseshoe crab expert. Who doesn’t?

https://www.flickr.com/photos/beachchairscientist/

https://www.flickr.com/photos/beachchairscientist/

  1. Journeying from intertidal and deeper waters, male horseshoe crabs arrive near the beach waiting for females.
  2. As the females come closer to shore, males attach to the female’s abdomen. The extra claw, or “pedipalps”, is what the male uses to attach itself to the females.
  3. Not just the one … but, many “satellite” males follow the conjoined pair.
  4. The females dig a depression about 5 to 30 centimeters deep in the upper part of the beach and deposit the clusters of eggs.
  5. External fertilization occurs – Allows for a little extra competition from the “satellite” males!
  6. Repeat steps 1 through 5 multiple times per season, laying 3,650 to 4,000 eggs in a cluster (usually an estimated 88,000 eggs annually!).
  7. In 2 to 4 weeks after fertilization, planktonic larvae hatch from the eggs. Some slow moving larvae may even winter within the nests and hatch out the following spring.
  8. After hatching, larvae swim for about six days before they relax in shallow waters to molt into their first juvenile stage in approximately 20 days.
  9. For the first two to three years of life horseshoe crabs molt many times over, growing a quarter of their size each time. Once sexual maturity is reached they slowdown their molting to once per year.
  10. Horseshoe crabs mature around 10 years of age (or 17 molts) and are known to live to be approximately 20 years of age.

For more information on horseshoe crabs and “99 reasons I am in Limulus Love” check out my horseshoe crab page here.

Penguins and pebble proposals

Have you seen this floating around the internet these days “33 Awesome Marriage Proposals You Couldn’t Say No To“? Well, I’m a romantic so I read them all and boy was I excited when I made it to #32 … all about that cute and fluffy flightless bird, the penguin. Check out the image below:

penguinproposal

I was a little annoyed at the generalization (not all penguin species participate in this practice), but then remembered the point of the article is sharing undeniably adorable proposals, not teaching marine science. Where did this statement come from? Well, most likely this was swiped from the movie Good Luck Chuck. See the scene below:

So to shed a little light on this generalization here goes it … The Gentoo and Adelie penguins are the two species out of the 17 known species of penguins to participate in this practice. According to the “Observations on Animal Behaviour” blog “During courtship, the male will present the female with a pebble as a gift. If the female accepts the generous gift, they bond and mate for life. These pebbles hold considerable value and they are also symbols of affection toward a mate. It’s actually quite touching that he would give one away when he’s fighting ferociously to defend his pebbles.”

Gentoo penguin

Gentoo penguin

Adelie penguin

Adelie penguin

Happy World Penguin Day!

From USFWS “Miracle Migration: The Long Distance Flyer, Rufa Red Knot”

Thank you to the Northeast Office of the US Fish and Wildlife Service for posting this graphic on their Twitter feed! With the mention of horseshoe crabs, how could I not repost this!?!

  • Did you know that shorebird hunting in the Caribbean and South America may contribute to the red knot’s decline along the Atlantic coast? (OK, how can we get this practice to stop trending? Those poor little birds!)
  • With scientific management measures now in place, horseshoe crab harvest is no longer consider a threat to the red knot?
  • Habitat loss due to sea level rise, shoreline development, and human development are still consider threats to the red knot?
  • One banded red knot, B95, was nicknamed “Moonbird” because researchers discovered this bird had flown enough miles to get to the moon and back!
via @USFWSNortheast

via @USFWSNortheast

 

Why you should never walk on dunes

It might seem nonsensical since the dunes look calm and peaceful, but it’s not a good idea to explore dunes. In addition to being illegal in many coastal towns, here are six other reasons why you should stay off the dunes:

1) Dunes store sand that help diminish potential shoreline erosion.
2) Dunes absorb the impact of storm surge and high waves.
3) Dunes prevent water from flooding coastal towns.
4) Dunes provide habitat and crucial nesting area for threatened and endangered species.
5) Dunes create a relaxing backdrop to any beach.
6) Dunes buffer the full force of the ocean and protect property.

BCS_Dunes

For more on dunes, their importance and role in beach ecology, check out the post “From Sandy, coastal towns learn ‘dune’ diligence. Is it enough?” written immediately after Hurricane Sandy.

What are the names of juvenile coastal and marine animals?

Well, it’s been quite some time since I’ve posted and it’s all due to an adorable little distraction – my son was born in early January. The addition has been wonderful and fairly stress free (keep your fingers crossed!). In fact, I have to say this time around my biggest stress was picking out a name. We had a boy name chosen, but not a girl name, so the decision was easy. However, it got me thinking about what juvenile marine animals are called. Here is a list of ‘baby’ names of over 25 well-known ocean animals. After all, you don’t accidentally want to refer to a juvenile shark as a calf or a juvenile eel as a spet, do you? If you can expand or elaborate on the list feel free to share in the comments box.

Birds
Flamingo, gull, heron, penguin: Chick
Crane:  Chick or craneling
Pelican: Nestling

Fish
Barracuda: Spet
Cod: Codling, hake, sprag, or sprat
Eel: Elver
Most fish: Fry or fingerling
Salmon: Smelt

Invertebrates
Blue crab: Larva
Clam: Larva, chiton, or littleneck
Horseshoe crab: Larva
Jellyfish: Ephyrae
Oyster: Spat
Sand dollar, sea urchin, sea star: Larva or pluteus (free-swimming stage)

Marine mammals
Dolphin, manatee, porpoise, whale: Calf
Otter: Whelp or pup
Shark, seal, sea lion: Pup
Walrus: Cub or pup

Reptile
Turtle: Hatchling

What this short video for some cute pictures of featured juvenile coastal and marine animals. Which one is your favorite?

Juvenile Animal Names from Beach Chair Scientist on Vimeo.

For more information:
http://www.pawnation.com/2013/11/19/baby-animal-names/7
http://www.defenders.org/sites/default/files/publications/sea_otter_faqs.pdf
http://www.zooborns.com/zooborns/baby-animal-names.html
http://www.enchantedlearning.com/subjects/animals/Animalbabies.shtml
http://www.english-for-students.com/Names-of-Baby-Animals.html
http://www.pawnation.com/2013/11/19/baby-animal-names/7
http://dictionary.reference.com/writing/styleguide/animal.html
http://www.horseshoecrab.org/info/lifecycle.html
http://www.bluecrab.info/lifecycle.html
http://www.jellywatch.org/blooms/facts

Hark! The herald angel (shark) strikes?

Angel Shark

Just one of the 25 Christmas/winter marine themed organisms on the Pinterest board. Check out the others here: http://www.pinterest.com/beachcscientist/christmaswinter-themed-marine-organisms/

Not often. But, the angel shark has been known to strike – if provoked. These strikes are similar to those made by its cartilaginous relatives, rays and skates, coming from the surface of the ocean floor (they’re pretty good with the camouflage as you might notice from the picture on the right). However, unlike rays and skates, the nocturnal angel shark doesn’t have a mouth on the underside of its body, but rather in front. This location is best suited for a diet of crustaceans, mollusks, and flatfish. With their enormous mouth they’ll suck the prey in and swallow it whole.

But, one of the most significant “Did you know?s” about the angel shark are that their lower lobe is longer than the upper lobe, whereas most shark caudal fins are top-heavy.

Also, pretty fun to learn is that angel sharks are ovoviviparous, just like frilled sharks, seahorses, and scorpionfish. This means “The young sharks tend to develop inside the female mothers.”

Jellyfish protein help create glow-in-the-dark ice cream

Looks like seaweed isn’t the only ocean organism used to make ice cream a special treat these days, particularly if its glow-in-the-dark ice cream. Charlie Francis, British ice cream creator, partnered with a Chinese scientist interested in understanding the nuances of jellyfish proteins, to synthesize the fluorescent jellyfish protein specifically for use as part of an ice cream flavor. Francis and his partner recreated the luminescent protein to construct a specialized calcium-activated protein that only glows in the dark once you lick it. And, the more you lick it the more it glows. No jellyfish were harmed in the making of this ice cream flavor. Is it safe to taste? Francis tasted it and said “I tried some and I don’t seem to be glowing anywhere” How much is a scoop? $220. Would you try it?

la-dd-glow-in-the-dark-jellyfish-ice-cream-201-002

Check out the ‘Lick Me, I’m Delicious’ Facebook page to learn more about all of Francis’ creations here: https://www.facebook.com/lickmeimdelicious

Under normal, non-dairy related circumstances, jellyfish protein glow when the photoprotein aequorin interacts with seawater to produce a light (i.e., green florescent protein or GFP). Why do animals and plants glow in the dark? Find out here.

gfp2_conncolldotedu

GFP was first described in 1955.

The Coral Song: “I may look like a rock, but I’m certainly not”

I listened to this three times last night. It’s “The Coral Song”. It’s a fun song. It’ll get caught in your head. I had to share. Maybe we’ll hear each other humming in line at the pharmacy. The Reef-World Foundation gets all the credit for helping the production get the science straight on this catchy tune.

The screenshot below is of my favorite line. What line do you find completely genius … in that “oh, so perfectly simple” way?

coralsong_image

5 things you might not know about oarfish

Last week 2 giant, shimmering oarfish washed ashore in southern California. This is not a common occurrence and some speculate that it may be a means to warn of an impending earthquake. Others say that it could just be a “banner week for weird fish photo ops“. In either case, I’m making the most of the teachable moment and sharing some facts about the prehistoric looking bony fish.

1. Oarfish, nicknamed “King of the herring,” are the longest bony fish in the sea reaching a length of up to 56 feet. This fact is not to be confused with the largest fish in the sea or the largest bony fish in the sea.

2. Oarfish got their common name from their long extended pectoral fins. Another identifying feature of oarfish are the long red plumes stretching from their head and other fins.

3. Oarfish swim holding themselves straight up and down in the water column. It’s believed that’s how they search for food.

4. Oarfish are inedible with a gelatinous body texture and hold no commercial value.

5. Oarfish tend to reside in the deep-sea up to 660 feet below the surface of the water. They only come to the surface of the sea when they are sick and vulnerable and often wash ashore after storms. Because of these sightings they’ve tended to prolong sea serpent lore. It wasn’t until 2001 that a oarfish was captured on film by the US Navy.

Image (c) Catalina Island Marine Institute

The first of the 2 sighting from last week was found by some very lucky environmental educators. Image (c) Catalina Island Marine Institute