Table of Contents:
1. Introduction
  1.1 Background
  1.2 Objectives
2. Anatomy of the Integumentary System in Marine Animals
  2.1 Skin Layers and Structures
  2.2 Epidermal Adaptations
  2.3 Dermal Structures
3. Physiological Functions of the Integumentary System
  3.1 Protection against Water Loss
  3.2 Thermoregulation in Aquatic Environments
  3.3 Osmoregulation and Ion Balance
  3.4 Camouflage and Coloration
4. Specialized Adaptations in Marine Animals
  4.1 Fish: Scales, Mucus, and Slime
  4.2 Marine Mammals: Blubber and Hair
  4.3 Reptiles: Scutes and Salt Glands
5. Sensory Perception and Communication
  5.1 Electroreception in Elasmobranchs
  5.2 Vibrissae in Pinnipeds
  5.3 Photoreception in Cephalopods