Lined Seahorse

Seahorse

Hippocampus erectus

Size: to 6"

Habitat: Weedy protected shore waters.

Notes:

Look for Seahorses in still weedy areas, where they cling to plants and objects with their prehensile tails. Color and body form are highly variable, as these masters of camouflage adapt to their surroundings. Strays may be found at sea, or even washed up on the beach.

Locomotion is accomplished by fluttering the dorsal and pectoral fins, and they are extremely weak swimmers, utterly unable to buck a current. Males have a brood pouch where they incubate the eggs, then give birth to fully-formed miniature copies of themselves. Seahorses feed on plankton, which they suck up with their tubular snouts, making a distinct popping sound. They are tolerant of brackish water, but not fresh.


An invertebrate is any multicellular animal lacking a backbone. This includes all animal phyla other than Chordata. The major invertebrate phyla include:

  • Sponges - Porifera
  • Coelenterates - Cnidaria
  • Ctenophores - Ctenophora
  • Echinoderms - Echinodermata
  • Flatworms - Platyhelminthes
  • Roundworms - Nematoda
  • Segmented worms - Annelida
  • Mollusks - Mollusca
  • Arthropods - Arthropoda

Invertebrates are tremendously diverse, ranging from microscopic wormlike mezozoans to huge animals such as the giant squid. Approximately 95% of all the earth's animal species are invertebrates; of these, the vast majority are insects and other arthropods. Invertebrates are important as parasites and are essential elements of all ecological communities.

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