Skip to content
Poseidon's Web

Poseidon's Web

Explain the Reef!

  • Home
  • Fishes
    • Bony Fish Basics
    • Who’s Who – Fishes
    • Shark & Ray Basics
  • Corals
    • Coral Basics
    • Who’s Who – Corals
    • Coral – Trending
  • Invertebrates
    • Who’s Who – Critters
    • Algae
    • Crustaceans
    • Horseshoe Crabs
    • Echinoderms
    • Jellyfish
    • Mollusks
    • Sponges
    • Worms
  • Mammals & Reptiles
    • Who’s Who – Marine Mammals, Reptiles & Birds
  • Reef Dynamics
  • Archive Highlights
  • About
  • Sea Turtles: Scutes Tell the Tale

    Everybody loves sea turtles.  With their cool shells, patient demeanors and adorable hatchlings, who wouldn’t? The broad carapaces covering their

  • Polychaetes: Marine Worms to You and Me

    Worms may be fairly low on most reef visitors’ bucket lists but they’re super-important members of the reef environment. Overwhelmingly

  • How Do Flying Fishes “Fly?” Well, Actually, They Glide.

    Why do flying fishes fly? To escape predators, to flee from surprises like boat engines next them, perhaps to entertain

  • Do Sea Urchins Sting? No, But They Hurt All the Same

    What are sea urchins? Members of Class Echinoidea, they’re distant cousins of starfishes that boast imposing defenses and bad reputations.

  • All Arms, All the Time: Feather Star Facts

    UNLIKELY ANIMALS THEY MAY SEEM TO OUR EYES, but feather stars are full-fledged members of the animal kingdom. Here’s a

  • Fevers, Shivers & Risks: Marine Animal Group Names

    We’re all likely familiar with the terms “murder” of crows and “pride” of lions for assemblages of those animals. But

FRONT PAGE – LATEST FEATURES

Sea Turtles: Scutes Tell the Tale

December 5, 2022

Polychaetes: Marine Worms to You and Me

November 13, 2022

How Do Flying Fishes “Fly?” Well, Actually, They Glide.

June 6, 2020

Do Sea Urchins Sting? No, But They Hurt All the Same

May 23, 2020

All Arms, All the Time: Feather Star Facts

April 11, 2020

Fevers, Shivers & Risks: Marine Animal Group Names

March 22, 2020

HIGHLIGHTS – FEATURES FROM THE ARCHIVES

Akin to Brittlestars, Basket Stars Network in the Dark

May 2, 2020

Stars of Doom: Crown of Thorns Starfishes

April 19, 2020

Brittlestars: Well-Armed, Laid-Back and Full of Tricks  

March 30, 2020

Meet the “Walking Sharks:” They Amble on Land, Too.

January 26, 2020

Bivalve Mollusks: Oysters & Scallops & Clams, Oh My!

October 12, 2019

Seeing Sea Anemones – for Themselves

August 2, 2019

WHO’S WHO – BONY FISHES

Bermuda Chubs: Just Hangin’ Around

May 1, 2021 neptune3-ca

Bermuda Chubs (Kyphosus sectatrix) are sort of the Charlie Browns of reef fish. Where many

Read more

Damselfish: Small, Shy, Feisty

April 30, 2021

Barracudas: A Tale of the Teeth

April 23, 2021

Why Are Flounders Flat? Because it Works.

June 27, 2020

BONY FISH BASICS

Benthic & Pelagic Fishes: Defining Oceanic Lifestyles

August 1, 2020

How Fish Feed: For One Thing, They Suck It Up

November 16, 2019

Video Sidebar: Fish Bottomfeeding Strategies

November 16, 2019

How Fish Breathe: Ram Ventilation, Buccal Pumping

September 14, 2019

Osteichthyes vs. Chondrichthyes, Bony vs. Cartilaginous

July 10, 2019
how do fish sleep

How Fish Sleep: By Resting, Snoozing & Totally Zonking Out

April 7, 2019

WHO’S WHO – CORALS & GORGONIANS

True Soft Corals: Beautiful, with an Identity Problem

January 12, 2020 neptune3-ca

True soft corals are among the most beautiful gems of the reef, yet they’re difficult

Read more

Bubble Coral: Soft On Top, Stony Underneath

September 28, 2019

Black Coral: Many Colors – But Rarely Black

June 15, 2019

Stony, Soft or Gorgonian, They’re All Coral Polyps

June 1, 2019

Sea Fans, Rods & Plumes: Thinking Outside the Calyx

May 4, 2019

WHO’S WHO – INVERTEBRATES

Polychaetes: Marine Worms to You and Me

November 13, 2022

By the Numbers: Tunicates, Different from Sponges

June 13, 2021

What are Copepods? Essential to the Web of Life

November 5, 2020

Fire Corals: Sneaky, Painful & Masters of Disguise

October 19, 2020

Do Sea Urchins Sting? No, But They Hurt All the Same

May 23, 2020

Akin to Brittlestars, Basket Stars Network in the Dark

May 2, 2020

WHO’S WHO – MARINE MAMMALS, REPTILES & BIRDS

Iguanas in the Galapagos: Here Come the Marines

May 17, 2019

Snakes on the Reef! They Won’t Bother You. Probably.

April 8, 2019

Haunting Video of a Stray Narwhal Adopted by Belugas

October 9, 2018

In The Galapagos, Penguin Gender Can Be Told by Beak Size

July 12, 2018

Baleen Whales Are Just the Size they Ought to Be

April 23, 2018

The Penguin Selfie: Better Than Yours

March 29, 2018

SEARCH THIS SITE

FISHY THUMBNAILS

Fishy Thumbnails: Angelfish to Frogfish

May 18, 2021

Thumbnail sketches of fishes you’re likely to see at dive destinations like Bonaire and Belize.

Read more

Fishy Thumbnails: Goatfish to Pufferfish

May 17, 2021

Thumbnail Sketches of fishes you’re likely to see at dive destinations like Bonaire and Belize.

Read more

Fishy Thumbnails: Rays to Wrasses

May 16, 2021

Thumbnail sketches of the fishes you’re likely to see at dive destinations like Bonaire and

Read more

THE WORD

Stingrays, Eagle Rays, Manta Rays: An Uplifting Tale

May 24, 2021

Benthic & Pelagic Fishes: Defining Oceanic Lifestyles

August 1, 2020

Fevers, Shivers & Risks: Marine Animal Group Names

March 22, 2020

FUNKY

Sea Turtles Fake Out Predators with Decoy Turtle Nests

May 20, 2020

Seeking Fish, Patrolling Albatrosses Join the Cops

February 1, 2020

Marine Life Stamps: When Snail Mail Is Really Fishy

October 26, 2019

POSEIDON MEDIA

Video Sidebar: Fish Bottomfeeding Strategies

November 16, 2019

 Diving with Manta Rays: Atlantic Giant Manta Encounter

October 22, 2018

Bluehead Wrasses – The Great Damselfish Egg-Raid

October 21, 2018

EXPLAIN THE REEF!

JUST GOING UNDERWATER AND LOOKING AT STUFF IS NOT THE SAME as Understanding the Reef! Poseidon’s Web works to explain Who’s Who, What’s What…and Why!

SUBSCRIBE FOR NEW POST NOTIFICATIONS

EXPLAINERS

Sea Turtles: Scutes Tell the Tale

December 5, 2022

Seahorse Anatomy: Differences Way Beyond “Cute”

January 1, 2020

How Fish Breathe: Ram Ventilation, Buccal Pumping

September 14, 2019

The Lionfish Enigma: Atlantic Threat But Not Pacific

July 13, 2019

Octopuses & Squids: Support Your Local Cephalopod

June 23, 2019

Stomach-Everting, Arm-Regenerating Starfish Explained

January 15, 2019

Barnacles: Sticky Crustaceans Explained

December 23, 2018

Nudibranchs: Fantastic Mollusks Explained

November 17, 2018

PLACES

Bonaire 2018: Old Standbys, “New” Sites. Who Knew?

January 28, 2018

The Philippines: In the Triangle

July 4, 2017

REEF DYNAMICS

What are Copepods? Essential to the Web of Life

November 5, 2020

Woodsy Perhaps, But Mangrove Forests are Essential Parts of the Reef

August 9, 2019

Follow Us on Social Media

  • Facebook
  • Twitter
  • Instagram
  • Google
Copyright Poseidon's Web, 2019. WordPress Theme: Gambit by ThemeZee.
 

Loading Comments...