San Diego Dorid

diaulula sandiegensis

The San Diego Dorid is a fascinating marine gastropod mollusk, belonging to the group of shell-less marine snails known as nudibranchs. Widely distributed along the rocky Pacific coast of North America, this sea slug captivates beachgoers and tidepoolers with its elegant appearance and slow, deliberate movements. Unlike many colorful nudibranchs, it displays a sophisticated, understated palette of creams and browns, making it a master of camouflage among the sponges it inhabits. This species plays an important role in its local ecosystem, acting as a specialized predator of marine sponges. By consuming these organisms, the dorid not only controls sponge populations but also bioaccumulates toxic compounds from its prey, repurposing them for its own chemical defense system. Observing a San Diego Dorid in a tide pool provides a wonderful glimpse into the complex evolutionary adaptations of soft-bodied marine invertebrates.

生息地: Found in rocky intertidal and subtidal zones, particularly on reefs, in tide pools, and under ledges where marine sponges are abundant.

外見

The San Diego Dorid features an oval, slightly flattened body, typically ranging from cream to pale yellow or light tan. Its mantle is covered in numerous tiny, sensory papillae that give it a velvety, carpet-like texture. The most distinguishing identifier is the pattern of dark brown to black rings or spots scattered across its back, resembling leopard spots. Near the anterior end, it has two sensory rhinophores resembling small horns, while the posterior end boasts a conspicuous, flower-like rosette of retractile gills. It can grow up to 10 centimeters in length.

界Animalia門Mollusca綱Gastropoda目Nudibranchia科Discodorididae属Diaulula

San Diego Dorid

カテゴリ

Invertebrate

レア度

Common

危険度

1/5 · 非常に低い

スナップ

最初にスナップしよう！

おもしろい事実

The dark ring patterns on each San Diego Dorid are entirely unique, acting much like a human fingerprint.

Their eggs are laid in beautiful, spiral ribbons that resemble white lace or ruffled carnation petals attached to rocks.

When threatened, they can emit a mildly acidic secretion that makes them taste terrible to potential predators.

特殊能力

It absorbs toxic secondary metabolites from the sponges it consumes, using these noxious chemicals to deter predatory fish and crabs.

Its skin is packed with microscopic, glass-like calcareous spicules called caryophyllidia, providing a rough physical barrier against predators.

It can instantly withdraw its fragile posterior gill plume into a protective pocket inside its body when it senses vibrations or physical contact.

サイズと詳細

長さ: 2-10 cm
体重: 0.005-0.05 kg
寿命: 1-2 年
一度の産卵数: 1000-15000
抱卵期間: 10-20 日

食性と食事

This nudibranch is a highly specialized carnivore that feeds almost exclusively on various species of marine sponges by scraping them with its radula.

主な食物

Purple Encrusting Sponge
Breadcrumb Sponge
Glove Sponge

採餌方法

Grazing

生態系とのつながり

hunts

Purple Encrusting Sponge

Haliclona permollis

Feeds extensively on this encrusting sponge, scraping its tissue with a specialized radula.

eaten by

Leather Star

Dermasterias imbricata

Serves as a prey item for this predatory sea star, which is one of the few organisms capable of tolerating the dorid's toxic defenses.

特徴

このオブジェクトにはまだ特徴バッジが割り当てられていません。

別名

まだ別名はありません。

コレクション

テーマが追加されると、このオブジェクトのコレクションがここに表示されます。

安全性

危険度

1/5 · 非常に低い

まだ特別な安全上の注意はありません。

よくある質問

San Diego Doridを見分けるには？

San Diego Doridを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。

San Diego Doridの長さは何ですか？

2-10 cm

San Diego Doridの体重は何ですか？

0.005-0.05 kg

San Diego Doridの寿命は何ですか？

1-2 年

San Diego Doridは何を食べますか？

This nudibranch is a highly specialized carnivore that feeds almost exclusively on various species of marine sponges by scraping them with its radula.

San Diego Doridは通常どこに生息していますか？

Found in rocky intertidal and subtidal zones, particularly on reefs, in tide pools, and under ledges where marine sponges are abundant.

San Diego Doridはどのように狩りをしますか？

Grazing

San Diego Doridの一度の産卵数は何ですか？

1000-15000